Fixing bad habits

Since I've been knitting again (past year or so), I'd picked up some bad habits, mainly I wasn't holding the tail yarn incorrectly, gripping it in my fist rather than wrapping it round my index finger. This meant it was very tricky to do any interesting colour patterns. I'm now in the process of re-training myself so my knitting is quite slow at the mo. Its a bit frustrating but its worth me putting the effort in now so I can do more interesting things later!