Whenever you make the decision that you want to be a designer or whatever you have to dedicate yourself to it. Meaning you have to become a person that wants to be the best. This could not be the case for some people or it could be. You have to find out where you want to end up in your chosen career/life.
Because once a person makes the decision that they are going to do whatever it takes, (not doing anything illegal) you will see how much better they will become. Being a designer it requires a great amount of self discipline. For example you have to basically do what you are telling a client. You have to send emails when you say you are going to and meet deadlines.
All of this is not hard to do. You just have to believe that whatever you are dreaming is possible for you. Remember if you are not believing in your dreams someone else is believing in theirs.