As a web designer for the media, something for which if you asked me 5 or 10 years ago if I'd be doing this, I wouldn't have ever dreamed of it, but I love do it, and I am grateful. I get along with nearly everyone at work and there is rarely any backstabbing, though I sometimes have to deal with a boss that occasionally feels he needs to micromanage every so often which can be annoying, but a full-time micromanager is much worse.
I might not be saving the world with my job, but I do work in media, marketing, and advertising developing landing pages. An example of my work is something like this:
http://www.multivu.com/players/English/7893651-ges-avatar-di...
http://www.multivu.com/players/English/7847351-star-wars-the...
It is fulfilling because I get to design something new everyday that I go into work. It is a new client, a new company, and a new design -- with a new set of instructions. Sometimes I'll design something and the client will come back a few months later and want that same exact design but with a different product or message they are putting out. It's nice to know that the work is very well liked. Very satisfying.
On our slower days, I might get 0-1 jobs but on busier days, I could get up to 2-3. I don't mind the downtime, but so long as I get 1-2 jobs a day, I'm happy about that -- I know what its like to be sitting at a company not getting any work... and that soon leads to problems.
Of course, there are those days, although more rare, in which I'll design something, come in the next day, and it will be completely different, meaning the client didn't care for it. It doesn't affect my pay or anything like that, but it is upsetting to know that they didn't care for my vision. Usually, my ideas come from scanning their website and getting the "concept of the theme" and then turning that into a landing page.
To get to this point in my life, I freelanced quite a bit, although it is much less now. I worked for a tyrant boss as a programmer (if you care to read about that experience: http://www.confessionsoftheprofessions.com/the-opportunity/ ), and then I worked for a solar panel company designing graphics for the kiosks (the machines that sit in lobbies or the front of stores and display or input information) in Flash, before the technology went obsolete and they just preferred to lay off nearly everyone instead of updating their technology -- I was the first to go, but I did get a nice 3-week severance package.
Anyways, you never know where you are going to end up... hell, I studied psychology! I had no idea it would lead me into the field of web design. And while I'm not making anywhere near 6 figures, I am quite comfortable to do what I do. There is downtime so I tend to work on some side projects at work and out of work that bring in a little extra income. Definitely aiming to get those side projects to the point where it will make up for what I am lacking.. and help give me that push to a six figure salary, but I'm not there yet.
Experience, ambition, perseverance, patience, and friendliness (customer support & service) are going to be your best friends in any field you decide is for you.