Last but not least you need to:

Sure, you may need a break now and again. You may also have times in your life where you need to focus on you, but to be an effective team player and build interpersonal skills, you need to maintain the work relationships that you worked so hard to build. This is easier said then done, especially if you have young kids at home. You don't need to spend a whole Saturday hanging out, but you could pick up the phone and call for a few minutes. You could go out for a quick drink on a Friday after work, or you could interact with them on social media somehow. This is probably the most important thing to do if you want to advance in your career. You never know when those relationships will come in handy but at some point, they will.