Hello, my bass teacher has been teaching me a piece by Bach for the past few weeks and I've been getting better and better at it. He's been teaching me different sections of it (two melodic parts and one chordal part). I can handle the melodies fine and I'm getting better with the chords but there's one major flaw and that's, you guessed it, playing each section back to back in one sitting. The chord part starts first and there are many very difficult chords which tend to get my left hand really tense (I'm right-handed, by the way). After this I play a simple melodic part which sort of leads into a very complex melodic part that pretty much explores the majority of my bass neck (4-string). The main problems I've had are with the difficult melodic part. It comes after the chordal part that tenses up my left hand and I either play the melodic part too quickly, too aggressively or I can't play it at all. I believe that this is mainly because when I chord I have a tendency to push down on the strings WAY too hard. It's sort of hard for me not to do. So my main question is how does one develop enough discipline to play chords gently and more relaxed? Is there any practicing method I can use? I think that if I could just play chords more relaxed then I might have an easier time with it.