Musar על קידושין 61:2

One must not walk in an overly erect posture nor with excessive heaviness, heel to toe, rather as one going to his occupations. Likewise our sages, of blessed memory, said: "If one walks with an overly erect posture even for four cubits, it is as if he pushes against the feet of the Divine Presence" (Berachot 43b), and it is written: "and those of lofty height will be cut down" (Isaiah 10:33).