From reading about a famous comedian by the name of Tim Allen, I found out he used to be a Cocaine dealer and was imprisoned after being caught at an airport and pleaded guilty. He ended up turning his life around after he was paroled and patched up his relationships with family and friends and started to focus on setting and achieving goals.
I think that's a very powerful message in that it's important to have goals and to carry them out. It can be anything and it does take discipline to fully accomplish everything that's on your heart. Well almost, unless you are really unlucky about something that's probably never going to happen like wanting to breath in space without a suit. It will most likely have to be then someone's dream that he is chasing after, but this can also be a goal to live out daily!
I think it's wise to list out personal goals daily and to chase after them. I'm lucky in a sense that my goal is to fulfill simple tasks daily even though it isn't anything extraordinary and sometimes messes with your emotional circuitry. I guess this is where mental and emotional health come along. The objective is to really just focus and will yourself out of something negative like being lazy or forgetful and get to it.
Out of discerning all this, I think if you can't achieve certain goals but still desire them right now then they are part of your dreams to achieve and shouldn't give up right away unless you have the right reasons while still managing to be happy. It's easier said than done so it's very important to be able to discern all of this.