Well, based on the comments already here, you MIGHT have some ideas on where to go (I'm looking at the conversation between yourself and Rogue and Paladin as I write this comment).
But the first and foremost thing, I think that needs to be done, is you need to nail down that LANE that you like to play best.
There's certainly nothing wrong with having the other lanes/roles as secondaries, or thirds as the case may be, but the one thing is the LANE you want to MAIN.
DISCLAIMER:
The following lane descriptions are based on an ideal/theoretical view of the roles, and are not based upon current Meta or other factors in League.
Are you a lone-wolf type player? Do you like being slow, durable fighters or tanks that barrel down on opponents with their bulkiness and powers afforded by said bulkiness? (Just basing the description around the common champs seen in the lane, I know that Skirmishers and the occasional Assassin is also played up there) Then Top-Lane is the place for you.
Do you want to help the team, but don't want to be labeled the ADC's lapdog? Then try your hand in the JG.
Are you a player who likes to burst down your opponent, giving them little to no time to react? Mid's the place for you.
Might you be a more passive player, not wanting to be alone like the Top-laner or Mid, but are unsure if you can handle the pressures of JG? Support is your niche.
And lastly, Are you a person that likes the challenge of weak early game, but has the potential to become a powerhouse late game? ADC could be just right for you.