It's hard to really put into words how I feel about answering these questions, because I don't generally believe that any strength I have has come from me at all. But here goes.
I gained access to a group of people with more strength and courage than I ever thought possible. There are some terrible, awful people in this world. I'm pretty sure I've had dealings with most of them. People who delight in trying to knock you down and tell you how weak and pathetic you are. There are times when one's faith in humanity, and the light inside people begins to waver. What I gained was... the priviledge of being able to learn from people and be among people who staunchly refuse to give up. To be broken by life. Who see the light at the end of the tunnel and take step after step to get there. No matter the odds. No matter how many setbacks they have. They never give up.
I gained admiration for people who started their journey terrified, alone, unsure and hating themselves... but over time gained
their strength and blossomed into who they were always meant to be. And along the way they were never too busy to offer a hand to those where they once were. Or even a smile, or a hug.
I gained inspiration from people whose only goal was to help others. To make them feel better and like their life was worth living. People whom I respect greatly, and attempt to even be a pale shadow of. I learned that the light inside people is rarely gone. Sometimes well hidden, but when unhindered... it shines brighter than the sun.
I gained hope. Hope that the world is not all cruel and dark. That if you look, you will find the antethesis to this. Sometimes in the most unexpected of places.
As for myself, I can't answer those parts. I have done a lot of introspection over the years. Some may say I have some insight into some things, but that's not for me to say. What I will say is that the people I have spoken to have taught me more about myself than I ever figured out on my own. Or at the very least led me down paths I never would have thought to go down.
Maybe a fragment of a life lived, but I never really feel comfortable attributing things to myself. I'm just me. No one special. However I have met a lot of very special people over the years, and seen
their strength. Their courage, indomitable spirit, love, generosity, kind-heartedness... and maybe some of it has rubbed off. But again that's not really for me to say.

What I will say is... the thing I have gained the most is the knowledge that people can be incredible. For every instance of the darkest darkness in someone there can be the opposite. I've gained the honour of talking to those who made me think, and question, and realise that however insurmountable something may seem, it may be possible to overcome.
What do I think I have to give to the world? I wish I could answer that. Just myself I guess.