I will admit to you, it is very easy to feel insignificant in this world we live in. Also, in a world full of confusion from many areas, much of the same applies.
I would like to share a testimony with you. Two of them actually.
When I was about 14, I fell off of a two story balcony, and landed head first. It was probably about 15 feet. Many things had to happen just as they did for me to even survive form this. Now I don't remember the accident, or a few days beforehand. My father took the day off from work that day (he owned the business, so this happened maybe 3 times in 5 years, even if it was a "short day"), and he told my mom I must go to the hospital, as no one knew yet I had hit my head until later when a neighbor admitted to having seen it happen. After I got to the hospital, I had a seizure, related to the head trauma (haven't had one since, and I am sure I won't have any more of those). They took me by helicopter to one of the main hospitals in my metro area, and I was in a coma for 3 days or so, and I woke up 30 minutes before a major head surgery was to be done, to remove swelling. I woke up and I knew I would be fine, no matter what the doctors thought might still be wrong. So where is my testimony in this recovery? My mom, who does not have faith, asked her best friend, who is Christian, to put me on her prayer chain at her church. I had 900 christians praying for me, and I believe I survived and made a full recovery, because of those prayers. Last part of this testimony. Over the course of about 3 months or so after this, I probably told my story to at least a few hundred people. Each and every one of them, they all said exactly the same words, word for word. "Man, you must be here for a reason". Each and every person. Now, I did not grow up a christian, and I had no understanding of God whatsoever. This freaked me out greatly that everyone said exactly word for word the same thing.
Testimony two, this one is a bit shorter. I was 19. Another life or death situation, only it was someone else. I will not go into all of the specifics, but the person survived. What part of this is the testimony? Well, in this moment of emergency, Jesus came to me in a vision, as real as someone standing in front of me. He held out both of his hands, palms facing up, and asked me to "choose life or death". I said to Him, "I give you my life as savior". I never doubted Jesus as Lord ever again after that, and it changed my life.
Now me sharing these things might not directly address some of the things you are struggling with, but it is my hope that such a testimony would be a blessing to you.
God bless