how do you maintain positive environment around you?

Hello, I believe in order to achieve anything we need positive environment around us irrespective of what field we are in to.

For me to maintain a positive environment around me, i watch this video.

I have posted the link from the most interesting part and in case its not, then watch from 6 mins and 27 seconds.

I would love to hear from you guys what you do to maintain a positive and good environment around yourself.