Ben Hogan wrote, "I find it is helpful if I jot down after practice exactly what I have been working on and precisely how it was coming along." Many professional golfers today keep notes on their swings and what they are working on, including Vijay Singh. These notes that relate directly to their personal swings prevent them from having prolonged slumps.
All of us have defects in our swings. The ones that keep reoccurring can be considered "bad habits". Bad habits have three aspects. First, they're tough to break. Second, they are unique to the individual and require a specific solution. There may be a dozens reasons for a slice, but which one applies to you? Thirdly, bad habits are always with you. You may get them fixed for a time, but most of them will always try to creep back into your game.
As you practice or take lessons, simply keep a record of what was wrong and what was successful in fixing it, then you have reference for the future. Now the next time you start popping up your drives, you won't waste time trying to find the reason. It's very likely that it's the same old bad habit coming back. Simply, refer to your notes, find the time when you had success fixing that fault and what drill, feel or swing thought helped. In time you will have established a personal "faults and cures" reference model. This will save from a lot of potentially wasted practice time.