sum and substance
a summary, the gist of something
The sum and substance of what the speaker said was very interesting.
Boost Self Confidence
stop taking yourself too seriously and have a laugh.
Angels fly because they take themselves lightly. - Alan Watts
People who lack confidence often take themselves very seriously. They take offence easily and quickly get defensive. They rise to the bait when someone pokes fun at them. You can easily spot such people – they're usually on their own!
It's impossible to laugh and feel anxious at the same time, and the less anxious, the more confident you feel. So lighten up. Make a determined effort to see the funny side of life. Seek out people who have a good sense of humour, and have one or two funny stories up your sleeve.
When you laugh and make others laugh, it does wonders for your self-esteem. Whoever makes you laugh helps you live.