I would like to add another thing. It's not Karma, but a simple law of attraction. I strongly believe in the latter.
When you do 'good' things in life, you attract other things alike. Better said: when you radiate a certain kind of energy, the same energy will come to you. You could easily confuse this with 'payment' and 'Karma' but I see it differently.
It is just creating the reality you want to live in and one by one, others jump into this reality to join you because they want the same.
Your 'good' things are not morally good (although it could be possible), but 'good' because they fit into your desired reality.
I am living my life this way.
Although I don't believe in judgment after my death, I have consciously chosen not to pursue a career in crime. Not for morals (ok, a little bit because of morals) but mostly because of the consequences during my LIFE. If you make a living with criminal activities, you'll have to deal with the kind of people I don't want to spend my time with. Simpel as that. Time and energy are precious (to me).
And about Hell: ha, ha... if you believe you go to Hell, you'll manage to find Hell after you die.



Not because you were a sinner, but a believer in Hell. Existence is about creating.