I would have preferred a more subtle message for making me realize that I'm not suited for the kind of job I had instead of breaking down into a depression. I think a big lack of interest already makes you incapable of doing your job correctly and in response gets you fired :S
I do not accept the idea that negative is needed for there to be positive. If you can experience happiness, then you can experience it.
Negativity is not needed in any situation, it is a destructive property of the human mind;
If your family dies, cry, but feeling sad will not help with any of that. Actually I think an appropriate response would be to live an even grander life to live your family's share. Some people are incapacitated most of their life because of some trauma. Fear is the worse, and needs to be ridded of. You do not need fear or stress to function; your adrenaline is enough to stimulate you out of tough situations.. all fear does is make you panic, and panic almost always leads towards bad choices. There is no reason to choose negativity. You may think you aren't choosing it, but feeling bad in any way is an active job, you make yourself feel bad. We just don't always notice that we are actively making ourselves feeling bad, as some of it seems to work in the background. But just like we don't notice at every moment that we're actively doing the action of breathing, it's possible to focus on it and control it. Feelings are just a bit more abstract. I don't think clinical depression is an exception; it is just an extreme case, and requires ..greater, or longer, interception .
Leaving happiness aside, it should be obvious that feeling bad is illogical and destructive and not worth experiencing. You can become stronger and improve without it, I know I have, and in fact, only positive aspects have made me better. The idea that "what doesn't kill you makes you stronger" is a misinterpretation. What gave me scars doesn't give me power in any way, it leaves me with weak points. All it can do is make you have to struggle more, which in turn may in some way, make you stronger, but it's not the negativity that did, it's the 'exercise'(lacking a better word) you were getting while doing so; there are better ways to promote growth--other ways to challenge yourself, without feeling horrible.
Happiness may not always seem attainable, but that's because it's in you the whole time. You don't need fancy cars, a great body, or even friends that like you(though it sure is nice), to be happy, all you need is to let yourself be happy. If it seems more complicated, it's because you're making it complicated, actively, or without realizing. However, you must want to be happy in order to let yourself be.
..eeh, sorry for the rant. I'm just tired of seeing so much negativity around me (not necessarily on the forum).