Asking players questions about their goals to build development plans

Hi 

I coach a group of really talented u12s and without making it too serious, I want to give the boys objectives for the new season that they can measure themselves against and strive for their own pesonal improvement.  I dont want to just give them objectives and want them to set their areas for development that they can be supported in.

To do this I thought about giving them some questions to answer about their strengths that I can build a simple plan off the back of. 

Has anyone got experience of doing this in general and what types of questions have you asked?

Thanks in advance

Matt