"Life is a balance between holding on and letting go." - Anonymous
I call this emotional and spiritual maturity! a.k.a Wisdom? Oftentimes, holding on to something, however elusive it seems, will result in the expected achievement. What we need to consider during this mesmerizing/passionate journey, however, is whether what we are going after is really what we want. We also need to foresee what we are going to miss out on because of the obsessive focus on that something. On introspection, letting go may come across as the more sensible approach. This realization needs to be closely followed by an effort to realign ourselves and go after things that really matter to us, if we are to not lose hope and slip into a meaningless existence. Looking at it from another angle, not letting go would be the mother of all mistakes if the pursuit itself happened to be a mistake in the first place. It is perhaps the faith and confidence with which we pursue something or let go of it that determines how happy we are likely to be in life.