I was also 22 when I had my first abnormal pap smear and found out I had high risk HPV. I'm now 28, have had 6 years of normal pap smears, married, and expecting my first baby. I tell you that to emphasize that an abnormal pap smear and/or a high risk HPV diagnosis is not a death sentence and does not mean you will develop cancer. In fact, cervical cancer is actually very rare even for a person with high risk HPV.
The reason that cervical cancer is even rare for a person with high risk HPV is because follow up care with a gynecologist and regular pap smears are very effective at catching (and removing) cervical abnormalities well before they turn cancerous.
When it comes to mild abnormalities, 70% of the time they clear up on their own due to the woman's own immune system. Obviously it is still important to see your doctor when advised, so that he can monitor your cervix and make sure that they really do go away.
When it comes to more moderate to severe abnormalities, the next step is typically a colposcopy to determine the exact extent and severity, as well as their location. From those results, a doctor may choose to remove them before they could get any worse... thus avoiding any cancer.
The most important thing you can do at this time is to follow up with your doctor as he recommends... whether that's coming back for a pap smear in a few months or going in for a colposcopy, whatever the case may be. That can be all that is needed to prevent cervical cancer.
A good multi-vitamin is a good thing to take each day just to stay healthy and keep your immune system strong.
As for sex in your next relationship, it is important to inform any potential partners that you have HPV. This is something you will be able to pass on to them. And while HPV is not likely to cause them any problems, they can give it to future women they are with who can then go through the same issues you are dealing with now.
A great resource is the book "What Your Doctor May Not Tell You About Abnormal Pap Smears and HPV" by Joel Palefsky, MD. It will help you to better understand this virus.
If you have any other questions, let us know.