It's all mental. I suspect you have no trouble swallowing your food. Or swallowing a gulp of water.

For pills, start by swallowing a pea, with a gulp of water. I used to have the same problem and now can swallow a large handful of vitamins at one go.

For the other, though I have no personal experience, LOL, I suggest practicing with a turkey baster filled with tapioca. Or if you prefer, I imagine you could get volunteers to help you practice... weg