Should i wear a grounding strap when servicing a CRT monitor?

I would suggest not wearing one, because the CRT uses very high voltages which could potentially remain while you are servicing it. Grounding yourself will put you at a greater risk of serious shock. The parts in a CRT are generally not as likely to be static sensitive as many other electronic devices, so the need for a grounding strap is not as great. Also, before working with a CRT, do some research into other precautions you should take to avoid electric shock.