Zac Efron and Lamar Odom haven't let their cocaine problems drag them down completely -- in fact, they're both trying to stay positive ... flashing thumbs up signs in L.A.
Having a positive mental attitude is an important first step. Let's just hope they don't crack.
Efron & Odom
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... No Drug Problems Here!
10/16/2013 4:18 PM PDT BY TMZ STAFF
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