Luck Doesn't exist, only hard (work) works
If you don't like don't do it. But don't forget that: NO PAIN NO GAIN.
I do for one full hour non-stop of 2,000 sit ups and then 6 sets of leg rise.
To be tired it is only in your mind.
Use what you have in your gym. Try to do my training program, you will lose your fat and gain muscles at the same time.
A bodybuilder is a sculptor who carries with him his own material.