Seasickness

Fool Yourself – Believe it or not (your choice) but 99% of seasickness is mental. Even the most stalwart mariner begins to feel queazy at times… but quickly solves the problem by telling themselves “I don’t get seasick!”. Repeat it 3 times in the mirror before departure. And make sure you say it with conviction!!
Look at the Horizon – When a ship is riding to a heavy sea everything is moving. The only thing that is stationary is the horizon and looking at it will often reset your internal equilibrium.
Follow your nose – Motion sickness is often caused by bad smells. Even pleasant smells, like a girlfriend’s perfume, can often send you for the railings. So if you smell anything strange, move into fresh air fast. And be sure to keep your living area clean… a dirty room or body is a quick way to invite odor.
Other people – One sure-fire way to get seasick is to watch other people getting sick. Like a schoolyard cold, motion sickness is very contagious. Avoid other seasick people at all cost.
Watch what you eat – One of the reasons people get seasick on cruise ships is that they over-eat. When the waves hit greasy, high-fat foods swirl around your stomach like water in the head. Also avoid sugar which can make you light-headed and dizzy.