avoid what leads to being unfair
Allah says: If you fear you can't be fair to orphans, then marry other women you like — two, three, or four. But if you fear you won’t be fair, then just marry one. Or be with your servants. That is closer to not doing wrong (An-Nisaa: 3)
Avoiding anything that might lead to injustice is a good way out, especially when we feel unsure or weak in doing what's right.
It also helps us avoid hurting others unfairly.
So: “Leave what makes you doubt for what doesn’t”
(from Syajaratul Ma‘arif, Syaikh al-‘Izz bin Abdus Salam)