[gordaco]

Calm down! Nobody in the industry knows everything about everything :). It's OK that you feel a little overwhelmed, because there is so much to learn. At your age, you can take your time, learn a little of everything, discover what is it that you like the most, and focus on it. And I'm referring to domains, not languages or techniques: if you're into web backends, there is not that much difference between, say, Python and Ruby, even if knowing both will make you appreciate the advantages and shortcomings of each one.

In the end, if you work steadily and know where to apply for a job, getting it is easier than it sounds (nobody's days have more than 24 hours, and if you started that early, chances are that you're quite better than your age's average). Just be aware that, with all that many languages, frameworks, etc. there will always be people (maybe even younger than you) that know more than you about some of them.