Know this from now on-isolation exercises (ones where you only move at a single joint, like curls) are not very helpful to gain large amounts of muscle. Do exercises like bench press, and others where you move at a lot of joints.
And read the stickies. I used to feel how you described. Then, I did (and am still doing) something about it!
A2G hacksquat: 550
Eat big, Lift big, Get big!
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