Any advice about becoming a photographer will be great
Become really good at photography. Learn, read, study, practice. Listen to those who already have a proven track record, or career behind them, and tune out the bull crap advice you get from those that have not.
Oh... then read, study, practice some more.
Rinse and repeat for a while.....
Start posting work up for critique, and don't be scared of it getting a good kicking once in a while: You learn from mistakes. Grown a thicker skin.
Don't just assume what you read in response to your work is true. Do some reading up on the person giving you the crit... who they are, what they do, and how good is their own work? If their work is crap, then why take their advice? If they post no work of their own, again, why take their advice? Anyone can post on the internet. Learn to seek crit from those actually qualified to give it.
..and as Chris says... enjoy it.
Don't walk around aimlessly looking for images, or more accurately... don't have that as your main method of producing work. You'll eventually get bored. Great image often start in your head, or in response to something utterly unlinked to photography. Ideas can come from anywhere... a book, a film, a song, a poem... a new story, a conversation. If you just walk around, you will just be "taking" pictures more than likely instead of "Making" them. Even if documentary image making appeals to you, you still need the story, the idea... it all starts in teh head with your creativity.
Watch tutorials and videos by all means.... but bear in mind what you should get from these is technical skills, NOT ideas.
Go to galleries and photography shows.
Learn what's current... who's good, who's not. Look at the work of those acknowledged to be good and analyse it for what makes it good.
Don't assume anything on Flickr is good because it has a squillion likes. Any old crappy image of a sunset, or a girl in whispy clothing in a wood will get a quintillion likes... especially if there's a smoke machine involved.
Carry on reading, studying and practising.
Accept the fact that you will be learning for the rest of your life... or just give up now.