Knowledge is what others tell you.
If you are asking for wisdom, you will have to figure it out by yourself.
Since you are asking for life wisdom and not life knowledge, I can only share with you the knowledge to figure out wisdom yourself.
Stop using your 5 senses to interact and react with the world you are in.
Don’t react to anything you saw with your eyes.
Don’t react to anything you heard with your ears.
Don’t react to anything you smell whether pleasant or unpleasant.
Don’t use your mouth to react to anything other say about you.
Don’t attached yourself to any physical emotions.
Just shun yourself out of this world. Be as quiet as you can be and observe your breathing and the life inside you that is void of anything you have known.
Practice this daily with meditation.
You will start to see things you have not seen before.