You won't get views until you get it out in front of people who might be interested - if you wait for them to come to you you'll be waiting a long time. Easiest way to do this is with youtube's promoted video feature - you're basically paying per view, and your video shows up as a promoted video on the sidebar when people search for related keywords. You create a simple text ad, choose the keywords you want, and then set a maximum bid per view.
The position your ad appears in depends on the bid and the popularity of the keywords - very popular ones will cost more than it's worth to get on the first page of results. You can bid as low as one cent per view, so the trick is to find keywords that are relevant to your video but don't have a lot of competition. You also set a daily maximum so you can control the total costs easily. I've run several of these campaigns at one cent per view with some success - our top video has over 45,000 views, the next few have 5-8,000 views. Videos I've never promoted this way get several hundred views at most through posting to facebook, twitter, and forums like this one.
Now obviously you don't want to just continually pay for all of your views - even at one cent per view it can easily add up pretty quickly. I'm sure if I was willing to set a high daily maximum I could have hundreds of thousands of views right now - but that could easily cost thousands of dollars in a short period of time. That may be worth it if your video is making money for you - i.e. selling a DVD or product - but it's not worth it just to get your numbers up. I do get some revenue from ads on the videos as well, but it really only offsets the promoted costs by about 25%.
However, on the one with 45k views I paid for less than a third of those - the rest came when someone who found the video through the ads on youtube posted it to their site or blog. It helps if you have a video with a subject that may be of interest to specific groups of people - that particular video is a documentary about ultrarunners, so it got reposted to a lot of running blogs and forums. It also would probably be useful to have additional related videos on your channel, so if someone finds one through the ads they're more likely to continue watching your other videos - unfortunately our videos aren't really related to one another so I haven't seen much of that on our channel.
With a little planning though I think you could put together a series of short videos with a single related theme or subject, combine it with some sort of product that you are promoting, and really leverage the promoted videos to get quite a few views as well as possibly make some money too.
