Trap after Realization

When you realize something new, you may be trapped into this:
"Oh, my goodness, people around me seem to have already known this thing, and they seem to be practicing this thing. What an idiot I am that I didn't know this until this late!"
so, lament, lament, lament..disappointed about yourself...hopelessness might follow...

But, you don't need to do so. You could do this instead:
"Oh, my goodness, finally God could allow me to realize this thing today, and I believe whatever I tried and invested myself into up to now might have helped a bit for God to allow this to finally happen to me. Thank God!"

I think you should agree and if you can't, then just think what if you have died without that realization. You at least have a reason to be grateful.

Yes, you do have the key to the door of Heaven as well as the one to the door of hell.