As flexd said, everyone is different. I have felt really, really bad on some compounds such as anadrol and will never use them again. Certain test blends fuck me up too. I feel sick all the time. But deca, sust, and cyp or dbol make me feel great. Way better than when I am off.
Get some doctor's advice along with a physical and blood work then weigh your options after you are informed and can make a good decision. You may just need a break or a different substance.