macbook pro getting extremely slow in performance

hey guys, my mid 2012 macbook pro , i5, 4gb , 500hdd is getting **** slow in performance it takes a whooping 40 seconds to boot . i use FCPX , motion 5, after effects , lightroom on an daily basis for editing media.. somtimes it takes almost 3 mins to copy a 2 Gb of Full hd videos from flash memory. is there anything i can do to imporve my overall performace?