Questions about joining the forces. Could you have a look and see if you could help me out?

I read through the FAQ, searched previous posts, but couldn't find answers to questions I would like help knowing.

I understand you guys won't be experts on the requirement process, but I would still like to hear what you have to say

I joined University thinking that was the route i wanted to take, but during the end of my 2nd year, felt strongly that what I was studying wasn't for me and have decided to leave.

Joining the forces has always been a plan for me, but I always want to join the forces, serve and gain life skills that I can use if I decided to leave.

My first goal was was to Fly, wether that could be in the RAF, AAC or Coastguard. What can you suggest about getting into a piloting role. Would applying to Sandhurst help me get there, or can I work my way up into that role, from a lower position?

My second goal, if Flying cannot be achieved would be joining a more specialised company and working my way towards a long time career in the special forces. ( I understand I would get stick for mentioning this anywhere, since it sounds like a call of duty kids dream) But any information on those roles would be appreciated.

Thanks for your time guys.

Anything else you would like to tell a slightly lost 20 year old looking to learn about life and work hard at gaining something worth telling people about

TL:DR Looking for life skills, Can I gain them in the forces