Trying to find a decent plot for a book I wish to write...?

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I want to write a book, but I'm having a tough time trying to find a plot that isn't too complex and mediocre. I don't write fantasy or investigative mysteries.

The best plot that I've come up with so far is a group of teenagers face many obstacles to figure out who they are (because that's what most teenagers are trying to do anyway), but I'm not sure if that is a very good plot. I'm not asking for someone else to come up with it, but maybe contribute a few minor ideas that I can turn into bigger ones. I don't want it to be cliche.

Do you think the plot I have above is good enough? If not, could you give me more ideas to add to it?