One evening (some time ago)I just decided to find out who the fuck I am and what my purpose is. Listening to Terrence McKenna advice, I went for a big 20ish grams of shrooms (Mackenzie, if I recall correctly).
Alone in a dark room, complete silence.

There and then I got all the answers for the questions you have in this post, and much more.
All those annoying questions, never bothered me from that day.

One important thing I got is that, there is a huge difference between faith and belief.

Have a nice trip! But be careful, the rabbit hole it's quite tricky, you will not return the same.