Apathy & depression. An easy way out?

I suffer from chronic apathy, zero motivation. Not sure if it is a disease or i am just lazy. too many ideas and zero execution. I abandon new ideas and projects instantly, even if i don't abandon them I never give my 100%. I fear that i will spend my life as a mediocre person, never succeeding and constantly regretful. People have issues but they work hard and resolve it. I know my problems (I think), I know the solution but I am unable to work at the solutions. 'Just do it' approach doesn't work for me. Am i looking for an easy way out? I am scared of working hard and finding out that no matter how hard i work I will always be mediocre. I think I am depressed. And I know I dont want to go through life like this. Please help.