Well,expectation is the mother of overthinking. I know people want to achieve something in their live and for that they set goals, do planning and all...but it is also true that not everything, every time goes the way we want to. So, we need to take it as a fact rather than a philosophy.
If something is not happening the way we want, let's not jog our mind too much and make it critical which will eventually push us to that grave of sadness.
If one door closes, another opens. So, keep your worries at bay and enjoy the beach!:) That's how I do.