If you ask God's mercy daily and beg him to make you better human, worker, father, husband etc. and consciously put your best effort, its all you need to live in peace. if she cheats or whatever jokes on her. if you have grace on par with Job's from old testament, you will get sad ofc cause you love her, but will say, "God you only took back what you gifted me". The ultimate "frame" is God frame. women, kids, houses, your health come and go. they are bypassers. rented goods. God is your ONLY priority. you bless, love, cherrish and protect all those other things, but as long as they don't make you lose contact with God.

You can argue that with that last line, you can get in a crazy paranoid spiral and see enemies of God everywhere and destroy your own life and gifts. Well even to have that discretion you need God's grace. it all starts and ends to Him. so to discern if someone becomes that "bad eye you have to poke out, or bad hand you have to cut off", you need God yet again.