Teddy Roosevelt stated that ‘comparison is the thief of joy.’
Whether or not this is always true is irrelevant; it most certainly is sometimes true, and probably is true more often that we’d prefer to admit.
Any time you begin thinking about someplace else you would rather be, or something else that you should be doing, you are (at least in part) not enjoying the present moment.
The ability to compare the past and future against the present situation is great for many reasons. It helps us avoid putting our hand on the hot stove, and learn how to plant enough crops to last through the winter.
But once we cross from planning into excessive, repeated comparison, we begin to worry, lament, or feel scared.
We miss the truth: that right now is perfect.