Pick your best road racing bike, your best sport/touring bike, your best mountain bike and one utlilty/beater bike. Make sure they are all 100% functional. Sell or give away everything else. Giving a bike to someone will make you both feel good. The main idea is to get rid of what is making you unhappy.

Selling means SELLING not holding out for some forum/fantasy/top dollar/nonsense/ so you don't have to actually get rid of it price. In this case, it sounds like a bunch of low-end projects, so you will not miss them. Then go for a ride everytime you think you want to buy another bike and ask yourself if it will truly be any different.