Having said that, there are a couple of suggestions that could help:
Tiny chunk. Tell yourself you only have to do 5 minutes of work on it. That small amount of work is less intimidating.
Just start. Once you get going, it’s much easier to keep going. So tell yourself that all you have to do is start. I like to compare this to my philosophy of running: instead of worrying about having to do the whole run, I tell myself that I just have to lace up my shoes and get out the door. After that, it’s really easy. Do the same thing with any task — just fire up your program, and do the first few actions (i.e. start typing). It gets easier after that point.