Do you often say things you later on wish you hadn't?

Even when it seemed the right thing to say or do at the time, do you soon later regret saying it?

For example, if you’re in a relationship and you are unhappy how you were being treated. You let your partner know, but soon you realise it wasn’t just his fault. So you wish to take back all you’ve said, but hey its too late.

I wonder what drives us to do that and whether it is a right behaviour or not. I often see people who are afraid of speaking or taking risks because they want to do everything as perfect as possible. So they think too much before initiating anything and chose each word as rational as they can, with the safest/best outcome.

I find this way to be fine, but unfortunately Its hard for me to train myself into being the master of this way of going about.

Do you ever find yourself doing the former? Which one is the right one? From the heart or from the mind? Risk or safety?