Change your focus from how to instead what you are making. Taking what you've said at face value, you don't have a clear idea what you are doing so it seems in

Change your focus from how to instead what you are making. Taking what you've said at face value, you don't have a clear idea what you are doing so it seems inevitable that you would "fizzle out". You don't have a goal, you are just wandering around aimlessly with your new tools of the week. So stop making "something", try and go make a thing instead. Make a specific goal and strive towards it.