Choosing or waiting the door to open?

Even though, I have decided what I want to be in future, but still almost everyday people around me and sometimes even myself will keep on questioning myself. "Is it what I want?" "Can I do it?" For the past few months I notice that I'm not really a good 'team member'. I'm a person who prefer to work alone. Sometimes I wandering, in my current work, is it to prepare me to my dream? Or a challenge for me? Or it just a long training that tell me to change my direction and move to other place? At this point, I'm confused. I don't know how to set my mind to move on and don't think too much. I just don't know what to do anymore. At this moment, I don't want to give up. I want to continue the journey I've taken. But i still not "steady" yet. Tonight, I sit in church and ask, what i should do. What i can do to convince myself to continue? I ask for strength and I ask for guidance. Now I'm waiting and hoping door will be open for me, which door will be open i don't know. Only God knows and He will decide it. I'm Hoping door will be open for me, and i will freely accepted and enter through it.