Cynthetiq

I'm going to add, that since you have not been assertive before (could be read as CONFRONTATIONAL) you will probably fee like a dick or an asshole afterwards. This is normal to some degree, because well, standing up for yourself and your rights, is selfish.

It doesn't mean that you should continue to feel that way it will pass especially when it's done without malice or real anger.

Ways you can say things could be like:

"Dude are you going to buy me another one?"

"Will you pick up the next set of groceries?"

"Could you be so kind as to not eat the last <insert food here>?"

While the key is to try to do it the moment it happens, you can go back later and say something like,"You know when I went to the fridge a moment ago there was nothing left, you could be so kind as to not eat the last one."

good luck.

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