How can I achieve my goals in life?

Im 20 and im nowhere near where I want to be in life. It's like I can't get any motivation at all... It's like im just stuck in one place. I want to attend hair school but I can't seem to put my mind to it. Idk if it's because of ptsd or what? But I just feel like I'll never be able to achieve my dreams of being a cosmetologist or a make up artist. Im also afraid of change... Im afraid of everything... Idk what's wrong with me! Help