Get some rest

Never forget how critical it is to get your rest. Your body makes more muscle when you rest, not when you lift.

Don't be afraid to have a light workout session if you're feeling tired.

Don't fret the occasional vacation that breaks up your workout schedule.

As long as you don't let "light days" become your only days, and "occasional" vacations from exercise become occasional days of exercise, it's not a problem.

You need you rest. Don't be afraid to get it.