Years ago, I was speaking with a client and she mentioned this. She'd recently been to a business conference and the woman giving the keynote had spent a lot of time talking about work-life integration. Here was the take home message; if you wait until you aren't working to have 'you time' there is a good chance you won't take care of yourself. However, there are often many times during a day where you can take 5, 15, or even 30 minutes to focus of self-care.
For example, a client of mine uses her 15-minute breaks at work to go on walks around the block which is easier to do than find 30-minutes post work to walk. I teach Yoga at a couple of businesses that integrate 45-minute classes into their schedule because they know employees are much more likely to do 45-minutes of Yoga at work than drive to a studio before or after work for the same 45-minute class. How many offices have a break room with a refrigerator? Why not purchase a magic bullet blender with a few coworkers so you can easily make smoothies at work?
You know those office meeting and conference calls that happen on the regular? I bet you usually have a minute or two of down time before they start. Those two minutes are a perfect opportunity to take a few deep breaths. I could go on but I imagine you get the point. Don't wait until you're done with work to take care of yourself. Instead, I encourage you to find the ways you can take care of yourself while at work. That, my friends, is the difference between work-life balance and work-life integration.