coping with interfering thoughts
The idea "I can't do it anyway" is interfering and discouraging. A reformulation might be: "I am the kind of person who readily (when? what is the matter?) doubts his/her own capacities. I shall have to take this into account and cope with it, e.g. by testing objectively what I don't and what I DO know ahead of time, also by paying attention to my insecurity."
Investigate the matter, talk about it, etc.

This is an example of a reformulation of an interfering thought. Of course, there are others. The thing is to "break through" negative thoughts and to find new, more constructive formulations.

Do you want to

  • have a summary of the coping with worry?

  • finish this subject?