וְהָי֣וּ חַיֶּ֔יךָ תְּלֻאִ֥ים לְךָ֖ מִנֶּ֑גֶד וּפָֽחַדְתָּ֙ לַ֣יְלָה וְיוֹמָ֔ם וְלֹ֥א תַאֲמִ֖ין בְּחַיֶּֽיךָ׃
et ton existence flottera incertaine devant toi, et tu trembleras nuit et jour, et tu ne croiras pas à ta propre vie!
Rashi
חייך תלאים לך THY LIFE SHALL HANG BEFORE THEE — because of uncertainty. — Anything that is uncertain may be termed תלוי (“hanging”); You will always be saying: “Perhaps I shall die to-day through the sword that is coming upon us”. — Our Rabbis interpreted this to refer to one who is obliged to buy produce in the market (who does not possess any of his own),
Ibn Ezra
In the word insecure, an ’ alef replaces the heh of the triliteral root.
Siftei Chakhamim
This refers to one who depends on the bakeshop. This is far worse that someone who purchases produce at the marketplace, because the person who purchases produce at the marketplace can buy a large quantity at once to supply him for a long time, unlike the one who depends on the bakeshop. And the curse is, perhaps on one occasion he will not find anything to buy and he will die of starvation..
Rashi
ולא תאמין בחייך AND THOU SHALT HAVE NONE ASSURANCE OF THY LIFE — this they refer to one who must rely on the baker (cf. Menachot 103b).