I'm starting to lose my confidence

I'm not doing too well finding a job. Actually I've found lots of jobs but none of them have hired me. I was confident for so long. I'd do my interviews with motivation knowing I have the skills they want, but then nothing. I'm starting to wonder whats wrong with me. In all honesty though I must be lacking in how I'm going about getting a job. I'm 41 and I can count on one hand all the jobs I've ever had. I didn't really have to put much effort out to get them. I think I just need to adjust to the reality that its going to take more strategy and job search skills to get employed.