The context is not to worry or fret about the future.
Making plans is fine as long as it is attended with "If the Lord wills".
I agree.
Yaaqob 4:13-17, "Come now, you who say: Today or tomorrow, we will go to such and such a city, and remain a year there to buy and sell, and make a profit. Yet you do not know what tomorrow may bring. For what is your life? Is it not a vapor that appears for a little while, and then vanishes away? Instead, you ought to say: If it is Yahweh's will, and we are alive, we will do this or that. As it is, you are arrogant in your boasting; All such boasting is evil. Therefore, to anyone who knows how to act righteously, but does not do it, it is sin."