There was a study about that around 15 years ago and the number was $78,000. Money does make you happy and solve problems to an extent, or rather it eliminates miserable situations created by poverty. Beyond that though, it’s up to you to find happiness. This was 15 years ago, so that number is probably double now.
Keep striving! You seriously can do it. Keep learning. Keep working. Keep trying, and don’t give up. Make a plan, set some goals, write them down, and follow through with it. It shouldn’t be as ridiculously fucking grueling hard to claw your way up the latter as it is, but it’s worth it when you get there.