If you are working in Live sound on events It involves extremely long (18 hour) days for a typical event most likely away from home. There is a huge amount of manual labour involved in setting up and rigging the event and you'll most likely be working outside where it could be raining. You will be working with bands who can (not all) have poor attitudes. You will then have to take all the equipment down and put it away and that sucks.
The best work in this industry would be to try to work for a permanent establishment such as a theatre or school or church. that way you wont be doing much manual labour and its not as stressful. Or to become a "white glove" tech where you dont do any manual labour but you have to be the best at it.
If none of that stuff puts you off than all the best to you. You have to be a certain type of person to do this role and It certainly isn't me. I would much rather be a paying customer for the event than setting it up.