There is a lot to say about determination. Most of the time people believe that with determination you can accomplish anything.
IMHO that is half true. Determination mixed with idiocy can be a very, very bad combination (and I am not pointing fingers to any politician in charge but you do have some good examples right there.)
Determination needs to go hand-in-hand with either some intelligence and/or some knowledge of thyself (where you are standing, what are you trying to do, what are your weakness and your strengths). With at least one of those two, then it is true that determination will take you places.
In case you still have doubts about how determination can help to achieve your goals, just watch this incredible video:
Personally, what I love the most is how (at the very end) two of the other dogs look to the one that got his way out. I almost can hear one of them saying "Can you now open the door for us?"
Thanks Len for the video!