Not by my strength

The sermon at the last church service I went to included a verse from Zechariah where God says, "Not by power, nor by might, but by My Spirit." That verse, although I've heard it a thousand times before has been running through my head ever since. It seems pretty self-explanatory but it has hit me lately in a fresh new way. And though the verse wasn't specifically talking about working out or getting healthy, as a believer I know I can apply it to my life because His Spirit is within me.