Sea bands, yo
Also, motion sickness meds, if you're walking around and you find yourself listing as the ship's moving, meds will help with that
My grandma used the sea bands, you wear one on each wrist with the white bit on a certain spot, and they take care of it
For me, sea bands took care of 98% of it. A couple days motion sickness meds were necessary to help with it, but even then it was to stop feeling like I was listing in movement to the ship
All seasickness is in the end is motion sickness. If you don't get motion sick, you likely won't get seasick
But if you're worried, sea bands sea bands sea bands
Yeah, build up your confidence and it'll show. Confident people are more attractive to others, I've noticed