Sure Shot Way of Getting Into Heaven.
First of all The Quran does not talk about humans going to heaven it talks about Jannah [Garden].
Surah Al-Asr states that man is in loss expect for those who;
1. Verify things.
2. And realise their potential *.
3. And confront others with reality
4. And encourages other to perseverance.
And as has been pointed out early eventually what matters is Allah's Mercy [Grace] *