How stressful is it to overclock/undervolt the graphics card and its risks?

Hi guys I recently bought the Asus rx 7900xt OC, and I came from an xfx 6700. The thing is that i have never touched anything in the adrenalin software, I have always left everything as default and always used the base power, I have never done what is called overclock and undervolt. I saw a post recently here in this subreddit about a "boost button" that increases your performance by 10%. But my doubts are: is that 10% bonus really worth it? Does it stress the GPU a lot? Does the temperature rise too much, therefore shortening its useful life? How much is it safe to boost the GPU? I currently move in temperatures between 60 and 70º in demanding games in ultra quality on 2k resolution (stalker 2 for example). I think they are good temperatures but is there really a way to increase the performance and lower the temperature? Thank you very much for the help and sorry for so many questions. I'm a little afraid of doing things without knowing to a component that has cost so much money.

EDIT: It should be said that I have seen videos on YouTube of all this but every time I have asked my questions in the comments, they have not answered me xD that is why I ask here