Another interpretation [of "in all things"]: that Esau did not rebel in his days. Another interpretation: that Ishmael repented in his days.
Esau Did Not Rebel and Ishmael Repented in Abraham's Days
Yalkut Shimoni on Torah 106:3
דָּבָר אַחֵר, שֶׁלֹּא מָרַד עֵשָׂו בְּיָמָיו. דָּבָר אַחֵר, שֶׁעָשָׂה יִשְׁמָעֵאל תְּשׁוּבָה בְּיָמָיו.