I've written about this before and others too. You'll notice the older you get the more you'll start valuing your time (your time alone, with family, with friends) than you'd value money.

Someone offers you a job with $30k more but you have to drive an extra hour each way plus you get only 3 weeks vacation, at some point that will start to look like a bad deal, but when if you were younger it might look like a great deal.

Look for companies that offer you decent vacation time (and make you take it). Sometimes those that give you "unlimited" will pressure you into not taking it by piling on work, or guilting you into working, so beware.

You only have one life to live, at the end maybe you'll be excited about designing an awesome SaaS system or Android app, but chances are you'll probably be happier about time spent with your close family.