How is it possible to have a big mind?

Cultivate the mindset of forgiveness in yourself.
Be as polite as possible.
When someone makes a personal attack try to understand the situation without attacking them back.
Never mind what others say.
When someone criticizes you, even if it is very oblique, do not forget to show itch.
Not asserting oneself and not displaying power despite holding infinite power;
Do not boast of undue power and do not display power!
Give people a discount.
Avoid selfishness and bigotry.
If someone files a complaint against you, there is no need for you to get on top of it.
No need to engage in online arguments and crusades.
Sometimes the enemy has to make concessions. It is important to be humane to the enemy.
Selfishly benefiting people is the hallmark of greatness.
How we treat children and the elderly reveals our mind.
If you are kind to someone even after they have harmed you, if you extend a hand of kindness, love and generosity to him, then what can be a sign of a greater heart?
Suppose someone framed you falsely; made various plots to harm you; but in the end you did not take any revenge (despite all opportunities to take revenge) what can be more big-hearted than that?
To be great minded you must despise everything and raise your hand in the path of humanity; advance in the path of love; respect people.
Read a lot of books at leisure.
Travel from unfamiliar places.
Master various hostile environments.
Mix and socialize with people.
Try to understand the human mind.
Put yourself in the other's shoes.