I recently read this essay, and in it the author, Jess Whittlestone, highlights how being present vs. planning for the future, or being mentally elsewhere, effects your productivity and subsequently, your happiness. Along with the rest of the internet, Jess Whittlestone kindly suggests that you're doing it wrong, but she does make an excellent suggestion: the balance is in being deliberate. With your time, your energy, your money, your thoughts. She asserts that in doing this, you can spend your tangible and intangible resources wisely, and transitively, increase your short and longterm rewards.