Try not to obsess that you have to do a Big Thing and let that block you. Just do the first little thing to get on the rung of the ladder. Like, go to the library and read a book about it. Or, call someone who could be a mentor. Or, buy the supplies. Then do the next little thing. Life isn't usually about jumping into the deep end of the pool, most things require you to wade out, and it can seem daunting if you don't set small interim goals. Also, remember this is not easy. Reward yourself at the little milestones along the way to keep yourself motivated.