Stop eating them ;) I mean it takes some time to get used to it and everything, but I usually enjoy pumpkin a lot, and sweet potatoes and maybe also regular potato without salt. Some people like to add some lime or lemon to make it taste "edgy" - you could also try with different spices. I prefer eating them as they are, the more simple the vegetables are being eaten the less I feel a need for adding salt. I really recommend you to try and just steam or cook a whole pumpkin and eat it as it is. Taste great without salt, and is also a fruit ;)