Teaching climbing movement, I always start with finding a rest position - or a position where the body is in balance. And I explain, climbing is basically moving from balanced positions to new balanced positions. The secret to being good a climbing is being able to do that transition with as much balance as possible.
Now... there is a whole lot more to that instruction than those few words, but these words are also great words for transitioning in our lives. We find some stability, whether its a job, a home, friends or a significant other and we keep moving forward. There is no staying in one place because we get older every day and so do the people around us. It is an innate need to grow. The trick to skillful living is to grow with as much balance as possible.
Balance is an action verb. It is not something you achieve and it then stays. We are forever moving within ever changing circumstances. Sometimes big things like job changes, moving homes or starting and ending relationships. And sometimes the more mundane... our diet changes, our exercise pattern, staying up later than usual.
In either case, climbing or life, knowing when you are in balance takes first finding balance. That state where things seem to seamlessly flow. The mind is not rotating around particular events or ideas. The body can relax and the breath is smooth. When you are out of balance, you continue the movement in the direction of unsteadiness. Just notice.