I can't speak for you, but I know that for me, inability to sleep is always the product of some unresolved worry or other preoccupation. Dealing with that (in my case, that means spending time meditating) solves the problem of waking up feeling unrested. However that doesn't necessarily mean sleeping more, since I find that during periods of consistent meditation I generally need a couple hours less sleep to feel fully rested.

YMMV, but ask yourself whether there's anything that might be preoccupying your subconscious that might be triggering your sleep issues.