Is it normal to still be going through "phases" at age 18?

Like the title says, is it? Majority of teenagers seem to go through their 'phases' during their mid-teens/early twenties as opposed to late teens (e.g. emo phases, rebellious phases, religious phases etc) but I still feel kinda lost about my identity - one moment I'll identify with one thing and the next i'll be completely indifferent to it. :/ I'm worried that I'll continue yoyo-ing on like this for a long time :S I mean It's not that I don't have direction/goals in my life (I do), I'm just confused as to who I am/what I'd identify myself as. I feel like I'm too old to be going through these 'phases' and that I should be forming some sort of solid identity by now :S Am I wrong in thinking this? Anyone else? I feel so confused right now :/

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