Quote: But she told me that my love for pain is stopping me from making progress and I should get rid of it.
You can't just get rid of pain. It doesn't work that way. Before that you first have to accept it. There's even an order of how things work (normally). Step 1: Acceptance. Accept the situation. That's always the first step. Wherever it's something to change is YOUR choice. No one else's.
If anyone ever tells you what to do as if it's their choice and not yours then they are not letting you make your own decision on the matter. That's violation of choice. Period. Regardless of the situation.
As for pain it's possible you might find certain specific types of pain more appealing then others. And we all do. People tend to get put off by the unpleasant pain (specifically anything that leads to depression). There's "flavors" for context. Along with "making the best of the worst". Why do some bad things happen? But why do people hurt you because they care? etc, etc. It can get rather technical. There's more to pain then just "physical oucies". That low pain threshold might be something to tap into even. Could tie in with an appeal to being put in line (or vice versa). Give situations like that some thought. There's also "putting in line" (or vice versa) with intimacy where a bit of pain is used yet the focus is on affection. Intimidation and fearplay can tie in. It's about the "combination". How things all merge together.
It might be something to embrace instead of get rid of. And in the end we all have parts of ourselves we have to keep. Even if we don't like it. Especially when it hurts. Because if you can't accept the situation there is no moving on. "This situation hurt in a bad way. It had a negative result." How can you adapt and change that situation? "This situation hurt but it lead to something good." Is that a situation that needs to be changed? Again, only you will decide this. And when you do decide either way the question is "why". People want to flee from pain, escape pain, but do they? Really? Or does it finally catch up? Different person perhaps, but similar enough situation. Where you don't know what to do. Because you "moved on" and "forgot". Instead of being prepared and remembering.
This is why going "safe label here, keep it or get rid of it" doesn't work. Because it's not specific. It's not delving into context. There will always be good and bad events depending on approach. Consider what hurt you the most and consider how you've made the best from the worst. If you have yet to make the best from the worst consider how that might be possible. It might be a situation from the past but if you consider a different approach to a similar situation it can prepare you for the future. "Most painful moment here. Crack a morbid joke and laugh instead." As an example. Countering a negative situation with some kind of positivity. Regardless of how much a situation hurts always keep in mind the honesty. And keep the honesty in mind even when things seem too comfortable, for even happiness can be a danger if pain is overlooked altogether. It's not something to be gotten "rid" of in my experience. It's something to be "faced". Can hurt, yes, but it's like fear. can you overcome it? Is it worth enduring it? Case by case bases. Treat each situation as it comes.
What your therapist likely was trying (and failing) to state is that the past is the past. Learn from it. But don't live in it. I find people often don't reflect enough though. Just try to do it without getting caught up in feeling guilty or otherwise playing the blame game. Examine the situation. Analyse the situation. Consider alternatives. Reflect on any additional new insight. Then keep living life. But maybe some peoples lives is devoting it to foresight and reflection. Just don't forget about experience and activity.
I got a basic formula. "X pain, Y gain, Z net result". Balance pain with gain, focus on net result. Note that pain may not necessarily be a bad thing thing and can contribute to gain, depending. That's going to depend on a number of factors. If it leads to intimacy/affection then it's a net gain for me. Also keep in mind it heavily depends on wherever such pain is controlled or not. Be it physical, emotional or verbal. Pain is simply a part of life. And through pain we sometimes gain. And sometimes it's just lashing out bullshit. Use your own judgement.