[Nautilus]

I'm improving day by day , I'm not so depressed as I used to be before thanks to God and my hope has grown now,
But now I need to know if I am a good muslim or not, and this time I'm not questioning it becuz of my paranoia, I'm not asking this bcuz I'm aspecting you to see what's in my heart but just to be aware if my iman is ok or not.

What I need to know is, do we have to understand everything to be true believers? because there are certain things in Islam that I just can't understand, but however I trust my heart bcuz I know that if my mind is not able to understand it doesn't mean that my heart doesn't believe it, and I know it because I fear Hell a lot, and I know my fear is real.. but is it enough to be a believer? I mean fearing hell?

For example I just don't understand predestination.. I can't, but then I like to think that it's because my intelligence is not good enough for that.. so I trust my heart, I believe it though I don't understand it.. there are other things that I just can't understand, no matter how hard I try, I just can't but I recognize that it is my limitation and I believe anyway..

but then I wonder if I am a good believer.. Qur'an always emphasizes the reason which I just don't have.. but I know that my heart believes bcuz I feel it is true thought I don't understand it.. that's why I'm questioning my iman.. I wonder If I am a good believer even if I don't understand certain things?.. my faith is blind faith, but what can I do? I can't change my brain.. If I only could I would do it..I would chose to have a very claver brain that understands everything but I just don't have such intelligence.. am I responsible for this lack of knowledge?