Troubled actress Lindsay Lohan is planning to reveal all about her drug and alcohol abuse hell in a post-rehab book, according to U.S. reports. The Mean Girls star checked into the Cirque Lodge facility in Utah in July (07) and is still completing counselling following a hellish first half of 2007, which saw the actress twice charged with drink driving and go through two rehab efforts in California. And sources insist Lohan will leave rehab a completely different person - and now hopes to help others who find themselves in trouble. One insider tells U.S. magazine the Star, "She found solace in reading memoirs of others who suffered to overcome their addictions, and she wants to similarly put her experiences out there."