Play harmonics with more strength when in the middle of a passage so that there is an even tone. Don't just go on with the music. When I started concerning myself with the division of the bow, I became a much better cellist almost immediately. We build up layers of tension that we aren't aware of. The body adjusts as a protective mechanism to prevent injury, which can add up to lots of unhealthy habits.
Vibrato is a classic example of repetitive motion.
The body is like a scale, it seeks balance. Don't inhibit this. Pressing is unhealthy and must be transformed into the more natural motions of pulling and lifting. The breath test, comparing the ability to breathe deeply in different positions, is a great indicator of when you are playing in a more natural position. This can be achieved with sloped cello cushions or chairs.