Getting over it usually involves considering the 'why' at the core of my desire. I want people to notice me, like me, love/respect/admire me - but having my digits on the donuts is no guarantee any of that will occur. There are some esteem issues involved; personal as well as the notion of there being a basic positive value to human life (a question that is very difficult to resolve purely empirically, by the way). Is there enough intrinsic value in "being-ness" that it is enough just to live, or are there further criteria by which the value of ones existence must or should be judged. (Yes, Virginia, there is a Sophist after all.)
Considering I gave philosophy a miss in school (in a vigorous effort to retrieve my eyebrow, which was busily trying to crawl its way past my hairline) I probably don't have much right to speculate along these lines.
Just call me 100% ambition-free, except for alternate Tuesdays and Thursdays.