Here’s a video of Starkey producing a track in 2 hours for airing on the BBC Radio 1 Mary Anne Hobbs Radio show. Not bad at all. A good example of setting a tough deadline being a good way to get the work done much quicker!
Music production is generally good fun, but try stay in the habit of giving yourself a deadline to finish a section so that you stay productive. One question I ask myself when spending hours fiddling with a sound/arrangement is “will this effort actually make a substantial improvement in the track?”. If the answer is no, then move on!