[jll29]

There are some pieces of good advice in there, but it is ultimately a selfish list.

"Mingle with others" because it makes _you_ happy implies _using_ other people; a better way is to _serve_ others ("Love thy neighbor like yourself"), which leads to a deeper happiness based on purpose.

[JKCalhoun]

They do talk about being a part of a bigger thing — to me this implies serving a greater cause, serving others in need.