Imagination can go a long way. Do you know how many “dumb” or “outlandish” ideas have become reality simply because the people who bore these imaginations believed wholeheartedly that they could come true? Here are a few that come to mind for me: flying in the air, Facebook, electric cars, independent women, equal rights, microwaves, walking on the moon, and space food. All were originally seeds of thought that bloomed into internationally altering realities.

Limitations live only in our minds. But if we use our imaginations, our possibilities become limitless. - Jamie Paolinetti
Your greatest imaginations and dreams are no different. It all starts with self-belief. Get your cape (find an idea), wear it (believe in it), and let it fly (pursue it wholeheartedly, embracing rejection along the way knowing that as long as you continue your flight your possibilities will be limitless). The same formula goes for learning self-acceptance. Self-acceptance starts with deciding to be confident (get cape), being confident in action (wear cape), and then finally believing and internalizing that confidence as a part of your nature (fly).
Imagine great things for yourself and start to watch your world change.