I am not on tumblr. I can barely spell tumblr. However, there does seem to be someone on tumblr (who copied my reddit user name) who is apparently trying to impersonate me. I like the idea that people are pretending to be me. I spend most of my time pretending not to be me.
If you prepare yourself at every point as well as you can, with whatever means you may have, however meager they may seem, you will be able to grasp opportunity for broader experience when it appears. Without preparation you cannot do it.