To me it means not trying to control every aspect of life. Being flexible and accepting things as they are and not getting upset when things don't turn out exactly the way you had hoped and also not getting down on yourself for having "failed" to control every detail. I think life is more enjoyable when we don't feel we have to control everything. Just let life enfold and don't judge what happens as necessarily good or bad, but just the way it is, and try to enjoy or make use of what is there before you.