Did someone tell you that you can recover your lost data on your own? They may not be wrong because there are software applications available in the market that can recover lost data. The important point here is - do you want to take the risk?
DIY is not always the right option for data recovery because you may not be able to judge the complexity of the situation. The situation could be worse than what you think. There is also the matter of choosing the right software application and without experience you may just end up choosing the wrong one. As a result, you may worsen the situation.