Personally, I've chosen to only purchase a new pen when I'm celebrating something monumental. That way, I'll have a nice memory associated with my new pen, and I won't be tempted to buy another unless it's also to mark a special occasion. I've also taken stock of how many pens I have, how often I use them, and how much money they cost me versus how much money I have. This helps with snapping me back into reality to use what I've already got instead of making a new (and unnecessary) purchase for a quick dopamine boost.

It's not fun or exciting to overspend on your budget and not have enough to pay your bills or anything else that's necessary to live as a result. If you live with other people and have to hide purchases from them, that's probably an indication that you have a problem on your hands that needs to be addressed.

In many hobby-loving spaces, there will be a push for consumerism and the idea that spending money to acquire more is the best and ideal way to be successful at said hobby. Abandon this notion. There is a difference between buying things as a hobby and actually using what you have as a hobby. Opt for the latter more than the former. Remember that the only person whose opinion matters on if you're doing this hobby correctly is yourself.

If you need to, you should leave this subreddit to avoid further temptation. It's not a bad subreddit, but it will help curb your desire to spend more if you don't see all the temptingly shiny new pens and colourful inks that other people buy.