Lol, Bigmoish. U definitely got me there

In all seriousness though, we do the things today that will help for tomorrow and don't do the things that will hurt. That's part of what we do for today. We don't worry about something or ruminate over things that we have no control over.

Btw if r even just wiling to jump off a train for sobriety, mixed swimming wouldn't cause us to fall. I'm not talking about halacha here obviously.

I'm a serious swimmer and have swim for years. I used to swim about 2 miles a week. It was mixed swimming.
As I made improvements in my kedusha I moved to a less busy pool, and then with time was mekabel never to enter pool area with glasses (my vision is bad), then I eventually even painted the inside of my goggles black with a small hole to see through.
Did swimming bring on lust? Once I was mekabel not to go with glasses to the pool area i by then cared very much about kedusha and I think not. I still had occasional falls.
I eventually reached a place where I felt it was time and appropriate to cut out mixed swimming completely. For the siyata dishmaya I needed to have greater freedom from acting out, and also in respect of the sense of kedusha Hashem had given me.
I am pained by the loss of swimming, and I haven't exercised for a year. But it was a deal that I went into with full knowledge and stand by to this day. If I didn't, I would go back.

I hope I don't have to give up swimming. Although I haven't been swimming that much lately for various reasons, I like to swim open water. There is a group that goes 2 mornings at 7am for .6 miles and then back for 1.2 total. It's amazing.

B"Ezras HaShem, I will post the mareh makom tomorrow or Monday evening.