When you do the same workout over and over again the body has no reason to change. If you want to change your body shape and increase your strength and fitness you have to challenge yourself and push beyond what your body finds comfortable. Try and get away from the routines that you feel most comfortable doing and mix it all up.
Your goal and experience should determine how often you should rotate your exercise selection and rep range, number of sets and workout frequency. Not forgetting the tempo you use and the time you spend resting between sets and the structure of all your workouts.
Does this sound confusing? If you aren’t thinking about all of these factors and putting them into practice than you are cutting yourself short and risking the speed of your progression. If you need help please get in touch.