I'm talking about not having such a rigid training program that you beat yourself up if you miss a day. I've talked about flexible diet plans here, but I believe flexible training plans are equally important. Because life happens.
For starters, when was the last time you switched up your training program? In order to build more muscle, you should periodically "surprise" your muscles. I have 3 upper body workouts and 3 lower body workouts, which I will typically do twice each before switching to another. And if someone is using the equipment I "need" or I just feel like doing something different, I do.
But what about if you can't make it to the gym? There are many different options for things you can do with kids or right in your home. Some of my favourites are taking my girls with me to the walking track and doing some kind of home workout video in my living room. And sharing a post-workout smoothie with my toddler, of course.
Life can be busy and things don't usually go as planned. Injuries also happen, an you may have to take a break from exercise entirely. As long as you keep eating properly you shouldn't be gaining fat or losing much muscle in a short amount of time. And you can always resume working toward your goals when you are able again.