Thanks nestOr. I'm not planning to go on vacation. What I realised is that I'm stagnating in my life and need new experiences to grow.
I don't think going on vacation, the old fashioned way ("sea sex and sun") will have any long term benefits, neither will changing jobs. Regarding my job, I love hacking away at javascript and there's tons of it right now. All in all I wouldn't say I'm truly at peace and content with the way my life is going, but I'm not unhappy either (I guess that applies to a lot of people

). Most people in my situation I think would say they feel good and fairly happy. Because I'm a little introspective (perhaps too much at times), I tend to reflect more negatively on it. I spend enough years of my life running from one distraction to another that I know I won't fool myself too long anymore
I just realised I'm stagnating in my life
spiritually. I want to connect more with people and do something more meaningful with my skills.
So sure, going on vacation isn't an answer. But going on a volunteer trip is an experience that can help me grow at a deeper level.
I read some more Eckhart Tolle yesterday (his second book) and there were very interesting quotes in there. In particular he was explaining how positive change doesn't arise out of dissatisfaction. A timely reflection. It made me realise I do have some dissatisfaction with my job, mostly that I build websites that have no meaning to me (tobacco, pharmaceuticals for $$$, soft drinks, ..). Thankfully we're on a cool project now that is to last for many more months, but each time I had to work on "meaningless" material (from my pt of view), my mood were just roller coaster.
So I guess another definition of happiness would be to go with the flow.. some say "to be who you are". That's way too abstract a quote to be helpful for a lot of people imho. A less abstract definition may be "to be congruous with your beliefs/deeper motivations".
So in that sense, especially if I can continue to use my web design/coding skills I am not trying to change everything, or to run away from my current life. I'm looking for new experiences, and continue to work but use my skills in more meaningful ways. Then I may as well do this abroad. In fact since I work 4 days a week I'll end up working
more
Volunteering in Asia, or for other organizations around the world can be a way to make more meaningful use of my skills. It is also an opportunity for deeper change because of connecting with more people, different mindsets, and especially getting outside of one's "box" for a little while. After that I guess it's down to each person to make it what they want to make of it. As bodhisamaya pointed out, it seems Dharamsala (to take one example) is a popular trip for "hippies". But people go there also to volunteer and do meaningful work. I don't think the Tibetans themselves spend the day smoking pot

So each person's journey is different..
And thanks again, these posts helped me precise my "feelings" for lack of better word. Though one big danger is to reason myself out of it. I have done this in the past many times. Reasoning just comes out of fear. I won't fall into the trap this time.
I got a reply from VolunteerTibet with a .doc file. Probably a more detailed application form.. I'll have to install OpenOffice to read it

Even if this doesn't succeed, I've got more ideas.
The best opportunity for me right now is to use my web coding skills. I could also teach english and so on, but it would feel more like an escape (perhaps in the sense that nestOr pointed out). Whereas to use my web development skills I feel like I'm not escaping but going on a tangent with mor opportunity for personal growth (rather than career expectations).