Continuity is the key to be successful... Whatever you wanna do.. You will be good in it if you do it a long time continuously... You will fail, if you are just emotional for some weeks and give all you can... You need to make it your lifestyle if you wanna be really good.
If you wanna make something your lifestyle you really have to focus on the reasons why you start... Never forget your vision. If you do, you will fail. There is no action without reason.
So, if you start to make a change, think about why you start and then.. NEVER FORGET IT.