I surround myself with positive people who bring out the best in me.

The test isn't how someone is in the room. It is who you are walking home afterwards.

Some people leave you talkative and faintly ambitious, mentally drafting an email you have been avoiding for a fortnight. Others leave you smaller, running a quiet audit of everything you said. Nobody announces which kind they are, and plenty of the draining ones are perfectly nice. Notice the walk home. Your body has been keeping records this whole time and would hand them over if asked.