Yes it is better to keep training even if your muscle is still sore.

Luck Doesn't exist, only hard (work) works

To be tired it is only in your mind.

I do for one full hour non-stop of 2,000 sit ups and then 6 sets of leg rise.

Genetics help to some degree, but the most important thing is the mind and the spirit. These two are even more powerful than physical characteristics that are passed on.

Eat a lot and train hard, I am sure that you will succeed.

A bodybuilder is a sculptor who carries with him his own material.