And have you forgotten the exhortation which addresses you as sons? -- "My son, do not regard lightly the discipline of the Lord, nor lose courage when you are punished by him.

For the Lord disciplines him whom he loves, and chastises every son whom he receives."

It is for discipline that you have to endure. God is treating you as sons; for what son is there whom his father does not discipline?

For the moment all discipline seems painful rather than pleasant; later it yields the peaceful fruit of righteousness to those who have been trained by it.

Therefore lift your drooping hands and strengthen your weak knees,

and make straight paths for your feet, so that what is lame may not be put out of joint but rather be healed.

Hebrews 12:5-7, 11-13

I've been undisciplined lately with respect to my eating and exercising. I keep cutting corners and making excuses.

With God's help I'm not going to anymore.