Thinspo can’t take over your mind when you don’t give it the opportunity to. Stop following thinspo blogs. Every single one. Don’t look back.
There will be times that despite your efforts, thinspo messaging will slip through the cracks and you’ll be faced with it again somewhere on the internet. Try as hard as you can to get past it. Put it behind you. Replace with with good thoughts and messaging.
While you’re only referencing thinspo material as an issue here, I think it’s also a really good idea to limit your media intake altogether.
I heavily restrict the media that makes its way to my eyes and ears, which cuts down on the amount of triggering and harmful content and its influence. It’s as simple as not reading magazines, even looking at magazine covers while waiting in line at shops can be harmful - and watching television commercials. I don’t have cable and have stopped watching adverts to avoid weight loss and diet advertising bullshit seep into my brain.
I’ve trained my eyes to stop looking at banner ads on the web. There are actually browser plug-ins that will block the ads out for you, or replace the content with something else.
By restricting, I cut down my chances of media influence. I call it a “media diet” - the only diet I will ever endorse.
Explore the body positive blog network (here is a massive list for a good start). Keep heading towards that positivity and flushing out the negativity. It shouldn’t exist in the first place and you shouldn’t have to actively tune it out, but it is necessary, and so worth it.
Good luck dear. <3