No, Jesse, I do not believe that I know everything. Nor have I ever claimed to even know a billionth of everything. I do not know where we go after we die. As far as I know, I have never died before - although who knows? Apparently, you know the answers to these questions. We are reincarnated? Ok. I guess I'll take your word for it. Just like I'll take your word for it that the LOA exists...and the moon is made of cheese? And Santa?
If you want things in your life to get better, focus on the solution, not on the problem. Your thoughts generate the action you take in your life. If your thoughts are soaked in negativity, your action can't be resourceful. Instead of focusing on the elimination of a problem, focus on what you can create instead. Replace worrying with the projection of positive images.
Develop an unflappable belief. Very likely you haven’t manifested what you desire because deep down you don’t believe that it could be yours. This is absolutely common and there is nothing bad about it. Nevertheless, if you lack the belief that it can be yours then it CANNOT manifest. With your disbelief you block the manifestation. Let’s say that you have a clear vision with strong desire but you don’t believe that it could happen for you. Then what happens is like saying; ‘’Actually, I cannot have it. I don’t believe that it can be mine.” The Universe responds; “so be it”. Why don’t you believe that it can be yours? Dig deep within yourself to find out what you belief is and then work on changing it.