Don’t make this difficult for me. Don’t cause me too much grief. Don’t be too hard on me.

"Don't bust my balls" - North American, vulgar slang. "Don't bust my chops" - Same meaning, not vulgar, but old fashioned. "Don't impede me" - Formal. "Don't stymie me" - Formal, old fashioned. "Don't hamstring me" - More casual. "Don't thwart my progress" - More formal.

Are you trying to describe an object? Can you give a sentence for example of where you want to use, “this”?