Please help me i have a lisp!?

Hey guys I am an 20 yr old american girl i speak english and for some reason i developed a lisp over the last 2 years. I am diagnosed with generalized anxiety and i had a traumatic event happen 2 years ago. When I speak english I seem to slur my words together and not pronounce things clearly and it is really embarrasing. I am also learning italian since my family is from italy and when i speak italian the lisp is much more evident because it involves alot of vowels.....I am so upset i dont know what to do please help!