Advice to a 25-year old

Someone on Twitter asked this question:
If you are 25+, can you share one thing that I should start doing ASAP if I don’t want to regret later in life?

Here is my response:

Sit with yourself, and write 3 pages in a journal daily.

Even if you have nothing to write, write “I have nothing to write.”

NOTHING clears up brain like this. Which is what we all need.