I agree that it should not be a chore, but that in itself sows the seed to the answer. If you want it, then you have to go get it. Practice IS the answer, but especially planned practice. The essential keys are a set practice place, a set practice time (plus any other opportunities) and a PLANNED practice. Know in advance what you are going to work on.Scales are a good thing, but to a degree are overated ie it's easy to say you need scales, theory etc etc but what you really need is the desire and the commitment. There are so many aids on the net, but don't pay too hastily. Look around, find what will be a good chance to work.

Practice the songs you want to play. Forgive yourself if it is not happening fast enough. Now, the essence to it all is ..... rote learning. Muscle memory is everything. Play the damn thing 500 times, and when you can absolutely remember it, take a breath and add the soul. Above all, don't give up, every day is a new day.