It's a little difficult to give a fuller answer without knowing what sort of industry you might be looking to get into, as there are steps you can take to showcase your abilities in different ways (for example, designers can create a portfolio to show off, software developers can do a few side projects, etc).
Some generic advice would be to not sweat about it too much. Lots of young people don't know what they want to do as a career and have a break after school. While it's not an ideal situation you can mitigate it by writing up a good cover letter explaining the gap any why you think the employer you're applying to would benefit from taking you on.