To answer some of your questions, try not to think about all of that horse shit, don't over analyze yourself man. Sometime you need to get raw and fucking intense and just attach the weight like a caveman. I have been in the Army for over 10 years and in that time I have been blown up, shot at and have been in some pretty god awful places.
So whenever I am at the gym I feel blessed not only to be their but to be alive. So I don?t hit a weight or whatever I shake it off and try next time. I?m just happy to be fucking alive, let alone in the gym. How long have you been training? Whenever I have a poor day in the gym I think back to the skinny 132 pound kid that could barely bench 85 lbs. Now imp close to hitting 3 and a quarter.
Remember man like life, lifting is a journey. There will most definitely be ups and downs. Stay the course and reach your goals man, don?t be like the other 99% of the population that has a knee jerk reaction to failure. Overcome it and don?t let it get the best of you