When in doubt, cut that out! Yeah, yea, doubting Thomas may have had a point in his day, and life may not be what you want it to be, but if you constantly doubt yourself, how can you accomplish anything?
Where is your confidence? What possible good can come from taking the negative aspect of any situation and growing it into acceptance?
Purpose of achievement is to attain a goal. So, if you set your goals and strive to get there, it should be assumed that you are moving toward your goal (at least so far as intent) no matter what you are doing, right?
I vaguely remember an instructor from college saying once,