This is something I see far too much of especially at the micro levels and with people with little experience. You enter a small satellite buy-in event with guarunteed x amount of places to the tourney.
Your playing well, but playing far too manny hands and you get greedy thinking nobody can catch you. You make the break sitting in the top 10-20% of the field. Lets say 35 entries into the event and only 120 left in the tourney, You are UTG with AK, what is the point of risking your whole stack (say 65k) going all-in with blinds 750-1500. hoping everyone will fold so you can steal the blinds, but someone does call and you loose most of your stack. Are you angry with yourself, the caller or the site for doing this. Next hand in anger you push again and get called and you are taken out of they tourney. Now you are definatley angry with yourself saying why did I do such a stupid play when a simple 3-4 xBB raise would on the 1st hand would have done the job. You may still have been called and lost, but you were still in a strong and healthy position to try and win a ticket.
Think about it for a moment, If you play these events, you don't need to be chip leadr or even make the top 10, all you need to do is to make sure that you are one of the 35 that gets the ticket.