Actually the formula and the key to happiness in life is very easy and inexpensive. What? Don't hurt if you don't want to be hurt, and betray if you don't like being trapped in a disappointed atmosphere.
This means learning to continue to do good to anyone, anywhere and anytime. Because our treatment of other people, both small and large, will get their own reward.
And if you want to be respected, appreciated, and treated politely, then do that first. Appreciate, respect, and be polite to them, so that they can act like that for you.
care for others as you want to be loved, because that is the formula of true love.
Because when you sincerely love, what gives you more love is not just those you care about, but Allah is the one who is all-loving and merciful.
kindness will be rewarded with kindness, and love will be reciprocated by love. So love to do good as you want to be treated well.
But on the contrary, if you deliberately treat other people badly, then don't be surprised if you get something similar.
Or even worse than what you do, because when you do evil your business is not just with humans, but with God.
And remember, the retaliation does not happen immediately to you or from someone you have hurt or betrayed. But it can be a reward that God will inflict on you through others, because God's vengeance is certain and will be more perfect.
So, less and less treat other people badly, because in the end your treatment will bounce back to you.