Some people say that promises are made to be broken. That certainly seems to be true in this cutthroat
society that we live in. But if you break your promise, you will ruin your reputation and no one will trust
you anymore. So whenever we say, "I give you my word," we should mean it. There is nothing worse than to be
let down by others because they have not kept their promises.
In fact, it isn't so difficult to keep promises. Just remember never to promise anything we are not sure
we can live up to. In short, therefore, to be trustworthy, we should always say what we mean and mean what
we say.

(You should) mean what you say 说话算话
make/keep/break promises
in cutthroat society 竞争激烈的社会 competitive 竞争的 to compete with others
ruin/destroy one's reputation
give you my word = Don't go back on your word word不用复数 words吵架 promises 可用复数
let down = disappointed 失望
as a matter of fact -- in fact
live up to 做到 live up to one's expectations(永远用pl)达到某人的期望