Keep going, and don't stop. There are SO many talented people out there and I see so many of them give up over time. No matter what it is, composing, running, flying - keep doing it and you will eventually succeed. That is literally the only one thing that you need in order to succeed - just perseverance.
Don´t ever give up and take it seriously if you really want to be successful on this. Networking is a really important but do not act like a jerk. I already know cases of people that are trying to start in the business but their names are already in the “black list” of fellow composers and professionals of the industry.
Rob Hubbard, who composed a lot of classic game tunes, especially on the C64 (e.g. Monty on the Run, Commando, Delta, Skate or Die, Crazy Comets and many more), talks about the good old times.
Cliff Martinez sat down with Illio to talk about his transition from rock drummer to film composer, show us his exotic musical toys, and discuss what quality a virtual instrument must possess to appear in his scores. With many blockbuster films to his credit, he knows what he's talking about.
Always max out your potential. Focus on what you are good at and make that your best skill. Try to be innovative instead of just technical and think out of the box.
Find something you really love doing. If you found it, stick to it no matter how crazy it might seem. Just do whatever makes you happy… Every second lost is lost forever, you never get it back.
Creating opportunities for yourself like contacting up-and-coming film directors can do wonders for your career if they like what you do, so keep at it, and keep creating music, demos and stuff people can listen to.