If you were once religious then I am sure that you used to pray and ask for god's guidance and help when it came to facing sth serious or hard ... like taking an exam or finding a job and so on.You used to relate all your success and failures to god and you always found an explanation or excuse for god when you didn't make it ... maybe most of us became atheists and refrained religion because of this , because our lives were meaningless... as if we had no power or will in taking decisions .We were lazy and we didn't finish our work because we believed that god would be there and finish the work for us .
Now , as an atheist , you are facing life and problems with a diffrent perspective . You are stronger without god because you know that no one up there is going to help you , so you perfect and finish what you do . When you talk , you are more decisive and stronger and when you act you wait for results. When you fail , you try to find an explanation , but this time you find a reasonable one and you know where the problem really lies .
Congratulations , you have your life back.