I know what you mean. Too much of anything can be a detriment to us, but we must also keep a consistent source of some things, such as strength and confidence, so that we don't waver in harsh times. Yet strength and confidence can also be a deadly pair--and come out in the heat of an argument as pride, so be aware of the things that come to mind then.
You're opinion is true, and unfortunately contrary to majority of mankind. We have the mindset that since we bought an item, used it, earned it, or came to own it otherwise that it is therefore ours and we are typically reluctant to share our possession(s) with others.