Is it a problem finding the words, or a problem with imagining something specific that you would like?
I have problems with both.
When I know exactly what want I often forget the name for it. Or, if it doesn't have a name -- like with haircuts or objects like "shirt" -- I can't get the words for they type of haircut or shirt that's in my mind.
I often just go blank when people say things like, "I'm going to the store, is there anything you would like?" The word "anything" could be attached to an infinite number of things, so my brain attaches it to nothing and my mind goes blank.
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"Coming back to where you started is not the same as never leaving." -- Terry Pratchett, A Hat Full of Sky
Love transcends all.