The following simple but powerful instruction is my scripture memorization.
I have it written on small cards, tucked in pockets of coats, my coin purse and bookmarked in all my latest reads.
Be patient with one another, making allowance for each others faults because of your love. Always keep yourselves united in the Holy Spirit, and bind yourselves together with peace. Ephesians 4:2,3 NLT
As a result I’m doing a great deal of reflection and asking God for forgiveness.
I’ve found by simply writing the verse out long hand during my morning reflection it seems to stay in my mind’s eye.
Attempting to serve a greater purpose in my life than my own needs is very freeing.
Trish Southard 
Fantastic, Trish! I love your method–just surround yourself with the truth and tuck it in every pocket and purse. More importantly, it’s speaking to you deeply as you interact with people. That’s a really nice version.
I just gave a devotional about unity at our homeschool group, and the very next week we had a divisive thing to deal with. I hope everyone–including myself–can remember truths like this so that we always keep ourselves “united in the Holy Spirit.”