Knowledge level

Hi all, I'm a 3 year experienced IT guy but i felt those 3 years experience felt like nothing to me i have selected as developer and worked as application support come development where I worked in very minor changes and bug fixes and almost time in support. I have started to lose my little development skills and knowledge which i learned and practised at the time of my college days, most of the time I felt ease in my work and suddenly i got a feel that I'm not at all growing and when i try to learn something new now it was almost very hard to me i don't know what to do can anyone give me a suggestion