An olive branch should be one of your choices.
Answer:
It means that nobody lives long enough to make every mistake so when someone makes a mistake learn from it so you wont make the same one.
Explanation:
Its kinda self explanatory
A if you had boated last n the Thames
I think it means that you are you. Your actions represent yourself and you are the only one who can make decisions for yourself. If you go and get arrested for stealing, that's who everyone knows you as. So, therefore, you are what you do, as in you are who you act like.