Diversify is always a must and you saw a gain on your trade so no you didn't goof. You also still have shares you can sell now to see more gains. You good.
Where I think you didn't focus more on was that you did not chart google
(correct me if i am wrong). If you did you would see why predictions # 5 was likely. (I posted a Google chart I did a few months ago when Google came close to breaking the $1,000 mark). +Walter Hardeman