@colwyn That working more intensely/frequently/longer not only will not help you, it could very well hurt you. I used to get in double workouts a few days a week, intense exercise 5 days a week, way too much endurance work, etc. Calm it down.
I've taken the intensity down a notch and aim for 4 solid workouts each week (depending what I am training for), and just try to move on the other days (walking, hiking, yoga, etc).
I am in better shape than I've ever been, feel amazing, no more consistent pain AND I've gotten the best results of my life in the last year!
I used to just kill myself every day with intense work and I was making very slow progress. No wonder, I was tired and hurting all the time. My results were slow too, largely because I was training so often that I was hungry alll the time and frequently blowing my diet. Don't do it! You don't get any extra points for working stupid hard.