Monitor went black Problems

Now What? My monitor went black. For a long time we have known one of the wires to my monitor has been partly broken causing strange blue lines to distract me when working here. So I just always jiggled it to get the lines away. Well unknown to me the line I was juggling was the darned power cable to the monitor. It suddenly went black, my monitor screen I mean. Panicked I phoned my son as I thought I must have jiggled that faulty wire too much and it broke completely.

Well as usual he gave me step by step instructions; take the black panel off in back and on and on. well I got my monitor face down, took the panel off and oh my G here is a big thick cable duh the power cable to the monitor so now I spotted the place where it was to be inserted, and phone under my chin I grabbed the cable plug and shoved it back in, taking some real strength to do it as my hands were shaking.

My question is do other people , regardless of age, get nervous and shaky when trying to repair a computer or monitor when your knowledge of the animals are limited more to using them than putting them back together? I have always been able to do some of the more mundane repair things after being shown the correct steps. But I am always rather unsure of myself.