Am I Even Progressing?

After been weight lifting for at least 1.5 years, i started when i was 15 years of age, and i always asked myself this question that am i even progressing? Am i woking towards my dream body or am i still at the same old point.....? Okay let me adress to this question now. The answer is that i am still in the same point,not improving anywhere, is it because i had alreasy hit my limites already? That should not be the case ... However i got a huge huge increase in strenght and muscle endurance, that is the only thing i got, i could now do 15 pull ups in 1 set, 40 pushups in less than 1 min, 20kg arm curl, 32kg bench press and many more... However i wanted to make some improvements in the shape of my body, putting too much stress is not too good, i ama ware of that but the fact is i am trying very hard to eat as much as i could, but still haven gain any weight yet! why why why, why is this happening to me??? I am not simply eating enough, damn it, how in the wold am i goig to increase my appetite??? I felt that i do not have enought imformation on what really is a bulkinh diet yet, i am skinny and light.... Damn it, i gotta have more workout inspiration, if not i will drop to failure... Soe one with fitness knowledge, PLs plsplspls pls helpme out!!!