Suggest Remedy For Excessive Hair Fall

i am suffering from severe hair fall since last 7-8months... i have triesd almost everything, but nothing worked.. i am devasted.. i am just 25 years old n i am a female.. my hair was very silky n thick.. but now it has lost that shine n thickness.. it has become very thin.. i am scared to touch my hair.. please suggest something which will actually help to get bacy my lost hair and that thickness.... thank you