In the morning, prior to taking that first shower, what does the pressure read?
If the high pressure is 50 pounds, then you probably have a 30/50 switch...it turns on when the pressure drops to 30, and shuts off when it gets up to 50. You can adjust that to a 40/60 setting. If you do, you will need to adjust the static pressure on your bladder tank first, though. That should be 1-2 pounds less than the turn-on pressure (now it should be 28-29 pounds). To check, turn off the pump, open a faucet until the water stops running, then measure it with a tire pressure gauge. Adjust as necessary.
Sometimes, the pipe to the pressure switch gets clogged with rust, and it makes the pressure switch very slow to react, meaning that the pump does not turn on as soon as it should. Also, make sure thatthe pressure gauge is working...while someone is using water, say eithera shower or maybe the clothes washer filling, watch the gauge and see if it moves slowly from the shut off point down to the turn on point, then goes back. If it gets much below the (anticipated) 30 pounds beforeit turns on, it is eithernot sensing the real pressure or the switch is bad.