Is it normal to crave others' confidence in me?

I know this may seem like another story about insecurities and all that crap so I apologize..But for awhile now I've been hoping that just once, some one would say they believed me when I mentioned my plans for my future. For example-one of many-I tell my family and friends I want to be a psychologist, but they always--and I do mean always--say I'll just "end up" doing something else. I hate it. I hate those words:end up. It's like why don't they believe me when I say what I want to do. I'm not old enough to say I've accomplished a lot but I'm seriously the type that if I set my mind to something I can do it. I hate having to try to prove myself. It's like I'm now living my life to win the approval of those I shouldn't really have to work for. What I hate the most is they can believe in something like God when there's nothing logical about it and nothing to physically prove it yet they can put all their faith in it. Here I can work my ass off to accomplish something and yet they still don't believe in me. I know I shouldn't care what others think, but I just wish someone believed in my ideas or goals. You're probably gonna say I should just believe in myself, but how can I if no one else does? Is it normal to feel this way or just some lame insecure craving for attention that I should just let go?