Lindsay Lohan is mentally prepared to move on with her life ... because she finally completed her court-ordered psychotherapy sessions ... TMZ has learned.
Lohan had been ordered to complete 18 sessions as part of her sentence in the jewelry theft case ... and we're told her last session finished up yesterday afternoon.
Sources connected with Lindsay tell us ... the actress feels therapy has "made an impact" on her life ... and she's learned different techniques to help her handle difficult situations in the future.
Lohan is due back in court tomorrow ... we're told she's hoping Judge Sautner will continue to be impressed with her progress ... and not sidetracked with that whole maybe, maybe-not hit-n-run fiasco.