It's as simple as doing your best in my eyes, and having no regrets
I'd like to think that if there is a higher power, they're omniscient enough to understand that I'm somebody who needs a reasonable level of evidence to believe in something, and omnibenevolent enough to forgive me for who I am in that case. Anything other than that would be a contradiction and mean that they either aren't all-knowing or all-loving. There's a whole lot of people on earth who believe in different things and still lead perfectly altruistic lives, so I think that a god who would (eternally) punish someone (with damnation) for believing the 'wrong' thing, for reasons beyond their control, wouldn't be a god worth looking up to at all.
You're smart, Glimpsed. I cannot give you evidence but i'm admonishing you that everything that we're doing on earth is not in vain, and there is a higher authority. If you want evidence, i suggest you and beg you to read the books revealed by God. They're guides for life and success.
A fact is that believing in the wrong thing you're not harming God (Allah) at all, only yourself. As there's a benevolent supreme authority there's also a maleficent being that is an enemy to all mankind, and that is Satan.
The truth is: we all sin and do good deeds, there's a day when we will all be resurrected by God to be rewarded or punished for everything that we did on earth.