For me I have learned that there comes a point when you need to work differently in order to protect your health and family well being. Big salaries are great, but when the price for that is massive amounts of overtime that takes you away from your family it just isn't worth it. Now I work for myself and I love it.
Hobbies are vitally important to keeping you happy and healthy, don't neglect them.
When you get a speeding ticket and the GPS co-ordinates in the photo imply the camera van was miles away, the court won't care.
My son was diagnosed with ADHD. A relief to know what it was, but also a burden in terms of managing it.
Falling down the stairs after slipping on a Nerf gun hurts. It really, really hurts.
Family comes first, always.