I don't try hard

I have always known this about myself but today it is bothering me. I don't try hard at anything I do. I have been like this for as long as I can remember. In school I only did enough to get by w/ ok grades. In my whole job career I have never put in much efforts to really look for a job. Most of (or all) have just been dumped into my lap. I don't know why I am like this. Maybe it is just b/c I'm lazy. I need to start making efforts to be a more aggressive person. I need a new job so bad that it is effecting my health slightly. I don't know if I just need some sort of push. I need to get my act together though.