Juat got it a bit early. Play hardcoe mode. It's not too much to handle honeatly and it just adds to the game. Of course I started a game on casual first but really wanted to try hardcoe. I'm glad I did.
This.
My advice only applies to you if you like playing like me in a way:
Activate hardcoe mode when the game asks you.
Play the game on very hard difficulty.
If you play on PC: Download and use J. E. Sawyer's mod. He's one of the developers of Fallout: New Vegas and his mod doesn't change anything but gameplay balance (and fixes some bugs) and in a really good way.
I love playing Vegas with these settings and these settings only. And I used them since my very first time.
Brightness affects Pip-Boy light too, doesn't it? If you really want a hard game, try playing with deactivated screen.
I like dark nights so I got a mod for realistic lighting as well.
Here's a little advice: pay attention to warning signs.