A sense of direction
It is generally a good idea to have in mind where you want to end up in life. However, does it really matter what path you follow to get there? Does it really have to be all 'focus' and 'purpose' and '5 year plans'? Or can we take our time and a few pleasant detours along the way? I suspect that the best strategy is a mix of both. Focus is what pulls us through all those distractions in life to acheive our goals and intentions, but too narrow a focus leaves us blinkered to other possibilities. Detours can provide some down-time, alternative options and learning opportunities. Sometimes they can open our eyes to the fact that we were actually on the wrong path to start with. Live a little. Get turned around once in a while.