HAKU

• People often think of them as something extra they can do to be sure their basic nutritional needs are covered. 
• There's also a possible placebo effect when taking supplements: People feel healthier if they do something they believe makes them healthy.

Mentally strong people recognize that they don’t need to please everyone all the time. They’re not afraid to say no or speak up when necessary. They strive to be kind and fair, but can handle other people being upset if they didn’t make them happy.

This is the drive where people are motivated because they believe they are engaged in something bigger than themselves. Wikipedia editors don't feel like they are doing unpaid labour, but they are protecting humanity’s knowledge - something greater than themselves.