I Need Help On Reality I'm with unenlightened, confratulations! Wakeful dreamers indeed. I'm 24 as well and I've written journal entries upon journal entries with 100 different ways of expressing what you did in your post...the dreaded feeling of hopelessness tagged along to a frighteningly real perspective that everything people claim to "know" is guessworkand it doesn't seem like there are any answers out there that will quell your search for true knowledge about this life.
After growing up with a strong desire to learn from and become like Jesus, ghandi, Buddha, etc, I plummeted deep into despair when I first grasped the possibility that all of my beliefs were concepts that were only as real as I believed them to be. For a few years I was up and down depressed and bipolar, with an ever decreasing motivation for anything other than searching for truth, always grasping onto new revelations but soon after seeing how limited that revelation was.
It sounds to me like you are in a similar boat that I was; with a mind constantly seeking truth but unable to find any in the world around you. keep going! In plato's allegory of the cave (check it out if you haven't read it), you have just realized that you have been living in a dark cave watching a projection of reality constructed onto a screen. You've turned away from the screen in search of something real, but all you can see is darkness around you. But if you keep walking, you'll start to see there is light at an opening, and one day you'll make it out and see the world for yourself. That day is inevitable, just keep going! A mentor of mine stresses that the most difficult and important thing as a truth seeker is to have a "tolerance for ambiguity."
Right now, it might seem depressing to think that you perceive only your own truths, but eventually you will see that truth is not a single idea of concept to hold onto. That is a lie we are trained to depend on that keeps us and mentally immature as a child! Truth is not an idea to lock down but insight revealed moment by moment. When you can tap into this, the sun comes out, and it shines brighter than ever.
This is the truth I currently stand on, which is what transformed me from being stuck in a cycle of despair all around me to seeing it trailing far behind.
Some of My significant influences contributing to my journey were Alan watts, Chuang tzu, zen.
Safe travels!