Listen to Your Body
Many times when an issue, ache or pain and or injury comes about we think it is an acute incident. "I hurt my back doing CrossFit" or "spin is terrible for my knees" are common comments I hear from my clients. In many of those instances you may find that the athlete/client can have some sort of postural imbalance throughout their body which created this injury.
That one set of 10 repetitions on the deadlift did not mess your back up. The posture you put on your spine while staying seated '9 to 5' in combination with not exercising the muscles which are deactivated all day are what got you there. When I use the term posture I am speaking about the positioning you're putting on your spine regularly throughout your day as opposed to what most people see posture as I.E: the tall runway walk. Unequal weight shifting from one hip/knee to the other, elevated shoulder(s), one hip or hamstring(s) side is tighter than the other, forward head posture (AKA upper crossed syndrome) are a few things to assess and repair when looking to optimally prevent injury.
Now, I mentioned being seated as the main poison here but we are sometimes also in another fixed position for 6 to 8 hours and that is our sleeping position. A lot of people do funky things while trying to fall asleep because of the hustle and bustle of the day they can't let their minds unwind in a decent position. Start paying attention to your sleep positions and if you have a go-to position. Aches and pains in your shoulder ? Maybe you're using it as a pillow to fall asleep and don't even realize it. That can definitely cause a problem when it's being propped under you're head which weighs 8-12 lbs for 6-8 hours overnight.
Getting what you want and need out of an exercise program can be difficult in general. Consistency in the little things really adds up if you can focus in on them. If you are having a discomfort issue you're body is probably trying to tell you something. Assess and repair !