It sounds like you're saying that my aversion to failing at something else is irrational. Would you mind pointing out the error in my reasoning? (This sort of exchange is basically cognitive behavioral therapy, btw.)
Many of the things that you have said are characteristic of the sort of disordered thinking that goes hand-in-hand with depression. The book Feeling Good: The New Mood Therapy covers some of them. You may want to try reading it (if you have not already) so that you will be able to recognize thoughts typical among the depressed. (I find some measure of comfort from realizing that certain thoughts are depressive delusions and will pass with changes in mood.)
As a concrete example, you said:
I'm just not smart or hard-working enough to do anything more interesting than pushing paper (my current job).
These are basically the harshest reasons one could give for failing at something. They are innate and permanent. An equally valid frame would be to think that some outside circumstance was responsible (bad economy, say) or that you had not yet mastered the right skill set.
I am thoroughly familiar with Feeling Good and feel that I can argue circles around it. My original statement (that I'll fail at everything) is an example of "overgeneralization" and "fortune telling." But this sounds to me like just a way of stating the problem of induction: nothing can ever be certain or generalized because we don't know what we don't know etc. etc. However, science itself basically rests on induction. If I drop a steel ball (from the surface of this planet), will it float, even if I think positively really hard? No. ... (read more)
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.