In the words of the Ba'al Shem Tov, "When you are walking and talking with other people and cannot study Torah, maintain your union with God by contemplating oneness. Similarly when you are on the road and cannot pray or study as you usually do, serve God in other ways, and do not be distressed about this because God wants to be served in all possible ways."
— Ba'al Shem Tov, God & The Big Bang by Daniel C. Matt