Everyone needs some time to themselves.
If we fix a goal and work towards it, then we are never just passing time.
But the delights of solitude don't only consist of dreaming. Next in enjoyment, I think, comes planning.
No matter how much we love our family and friends, a part of us needs the occasional moment of solitude as a plant needs water. It is the inmost core of each of us that, that part which nobody can define but which we all recognize because it never changes.
So it is necessary that we should learn to be alone.
But the important thing about learning to wait, I feel sure, is to know what you are waiting for.