How to get to heaven?

　The celestial world is a more enjoyable place than the human world, and there's no suffering like humans have. It's a world I admire. I'll answer the question “how to go to heaven and how to avoid falling into hell.” (Since this is an answer from a Buddhist point of view, I will paraphrase heaven as the celestial world.)

As an attitude, I first think over and over about the impermanence that the person gained as a human being doesn't last forever, and how wandering around in bad interest (hell, hungry demons) after death. Then, a sense of fear arises. I definitely don't want to go to hell, right?
When a sense of fear arises, I learn that merit can be obtained by devoting myself to the Three Treasures of Buddhism, Dharma, and a monk, and I revert to the Three Treasures.
Next, I have a strong feeling of believing in karma. It's a business philosophy that is familiar to Japanese people. Simply put, karma is about taking on the results of one's own actions, whether good or bad. If you do good deeds, you can get good results, and if you do bad things, you can get bad results.
If you can have a strong belief in karma, let's just do good deeds in order to be reborn into the celestial world in the next life. If the desire to be born in the celestial world fades, it will cause fear of being born in hell and strengthen the desire to be born in the celestial world. Also, it is important to continue to have the feeling that you don't know when you will die. Precisely because you don't know when, just do good deeds so that you can die at any time It must be.

In this way, I want to be born in the celestial world over and over again, and if I continue to do good deeds, I will surely be able to be born in the celestial world.

This is also related, so I'll add a little bit, but what we should aim for as a Buddhist teaching is actually not to be born in the celestial world. This is because the celestial world is fun, but the work we've built up until now will run out at some point, and we'll also be born into humans, hungry ghosts, animals, etc. Once we can do good deeds because we want to be reborn into the celestial world, the next step is to be freed from reincarnation. Furthermore, if we can do that perfectly, We aim for a state where we can continue to do good deeds not for ourselves, but for others. This final step is where we should aim.

　You should reflect on past mistakes and live in line with the teachings of Buddhism.
In line with the teachings of Buddhism, it means living by suppressing feelings of wanting and wanting, feelings of anger, and complaints.

I wrote about funerals in my previous answer, but I didn't write it with the intention of “if you don't have a funeral, you'll end up in hell.” (Furthermore, such ways of thinking and saying things promote discrimination. Please be careful). On the other hand, by looking up the details of the funeral, you may be able to get a clue to going to heaven (paradise).

If you chant Namu Amida Buddha,
I can go.
I don't even need a funeral.
Namu Amida Buddha is the call of parents
If I call you mom,
Yes! In order to respond,
Believe it or not,
Right away from the Pure Land of Paradise
They'll take you there.
But that's not right now.
Nobody knows when.
Until the call is made,
Live cheerfully, happily, and energetically!
subsist
subsist
this kind of us
Amida-sama is watching
Please give it to me.
Namu Amida Buddha

This is Kawaguchi Hidetoshi. This is my humble answer to the question.

If you are thinking about the celestial world out of the six paths (heaven, man, shura, devil, hell), I know that simply by accumulating as many good deeds as possible, you will be able to go.

However, even if it is called the celestial world, there is no change in the fact that it is within the reincarnation of loss and suffering in any case within the Rokudō. Eventually, the fruits of good deeds in past lives run out, and when the lifespan in the celestial world runs out, it falls to a world below Tendo...

However, even in the celestial world, in addition to the representative 33 heavens, there are various heavens, and among them, there are also heavens with Buddha and Bodhisattvas.

For example, there is also a place called Kabuto Suten where Miroku Bosatsu is present.

Also, even in the celestial world, there are places where you can practice Buddhism and where you can't, so if possible, by getting a definite Buddha relationship, you will go to the celestial world where you can receive guidance from the Buddha or the Bodhisattva, and eventually, by working hard on ascetic practices leading to enlightenment and nirvana, it will also be something you would like to be able to break away from the reincarnation of the six ways.

In any case, I would like to prepare so that I can continue to strive for Buddhist practice by gaining a definite relationship with the Buddha.

Please refer to the following little bit of my comment.

“On the significance of funerals and memorial services”
http://blog.goo.ne.jp/hidetoshi-k/e/d2c3793b56451efdff407f7090851dc1

Kawaguchi Hidetoshi Gassho

　Whether you go to heaven, go to the Pure Land of Paradise, or go to hell, you become a Buddha by doing one of your actions, and any world becomes a world where the Buddha dwells as depicted in your ideals. Please make it happen by all means. I will cooperate with you as well.