Google adsense confusion, help welcome!

I have used adwords with no problem for my anxiety site below. I have just built the site www.intra4life.com and wanted to start of using adwords for this site also, when I tried to create my campaign I was told keywords are inactive. I then emailed google and received this reply
1. Reactivate them in one of two ways:
– Increase your keywords’ Quality Score
– Increase your CPC bid
To increase the quality score we encourage you to create more targeted and
relevant keywords. The more closely your ad relates to your keywords, the
more likely a user is to click on your ad. This not only increases the
number of potential customers reaching your site, but it also increases
your click-through rate (CTR) and Quality Score and therefore reduces the
CPC required to maintain your position.
For example, if you want to advertise a London hotel, you will have […]

Original post by Karel