Open Question: What should one do if they are written up at work?

I was taught if one is written up at a job, the chances of raises and/or advancement due to a write up are very difficult if not impossible within that company. If one signs the document for the write up and does what he is told within those guidelines should one leave it at that and move on or should one start preparing an exit strategy from that company? For example, One gets written up, he signs the document, does as he is told within the guidelines of the meeting and the document and is assured that this won't affect his future so long as he follows the guidelines. The other side of that is employee knows from experience with other companies and from his own observations, that once written up, one is usually at a dead end and often times the only way to move up is to move out and therefore does as he is told as above and follows the guidelines but at the same time, starts looking for another job elsewhere and has the strategy of "put up with it until you can find another job, get a solid offer from another job, put in your two weeks and get out while you still can" Should one just deal with it, move on and stay with the company he's with or put with it for however long it takes to find another job elsewhere, get an offer elsewhere, put in his notice and leave?