In context with the rest of the chapter, Instead of saying you are going to do such and such, you should add "Lord wiling" as we do not know what tomorrow brings.
An example from my life is a few years ago, we had traveled for a convention. Plans of mine while my husband was a delegate was to attend portions of the convention, hang out with people I knew and maybe some sight seeing. Instead, I was in the hospital with a previous undiagnosed heart condition for half of it.