Dreams come true very easy for some, but for most it requires a little work and sometimes we give up when we realize this. Practice makes perfect, there's no greater or simpler way to get that point across. Fulfilling dreams call for some practice, work, and even some failures. But if you use those failures and channel them into something positive (like a learning lesson) then everyone can get a little closer to achieving their dreams.
For me I personally think that you regret the things you didn't do more than the things you did. Because if you go for your dreams, then your at a 100% greater chance of achieving them then if you don't try at all. I was inspired by so many great dancers before me that broke into the dancing industry and it soon became clear that nothing came easy, they worked for it at all times. So, don't be afraid to give 110% and just go for it because when you do, your 1,000 steps closer to your wildest dreams then you were before you took that first step. It's okay to fail sometimes, but not trying at all because of the fear of failing will only keep you from your success. I believe everyone should try to achieve their dreams, but it all starts with you and a lot of help from God.