Sure. I think all, or at least most of us, probably feel this way from time-to-time. I suppose it has something to do with the view of society at large which tends toward such ideas as: "pull yourself up by your own bootstraps" or "look at everything you have & look at how some people live...", etc. Even though we know these kinds of ideas are off base, it's still difficult not to be influenced by them because they're all around us.
I also tend to wonder why I just can't beat this myself. I know what it's all about. I should be able to figure out a plan. But somehow it just doesn't happen.