After suffering all his adult life, the father of two said it took courage to visit a doctor to finally be diagnosed with depression.
�I wanted to make sure my kids have a father who will be there for them and give them the love they deserve,� he said.
Mr Sharples will run the half-marathon in the City to Surf on August 30 to raise money for mental health charity beyondblue.
The avid Instagram user said he was documenting his training with the hashtag #runningwithdepression under the name libertyrunner.
�Winston Churchill said: �When you�re going through hell, keep going� and that says it all for me � in running and in dealing with depression,� he said.
�The good news with something like depression is that, just like physical illnesses, depression and anxiety can be treated.
�The sooner you seek help, the sooner you can recover.� Click here to donate