Self Promotion...

Does anyone else have a hard time with self promotion?  It makes me go crazy just thinking about putting together a business card, or a postcard, or any sort of mailer.  I am not exactly sure why.  It just does.  The top image is my new business card and the bottom is a postcard.  (There will be more info on the back of the business card.)  Any help is welcome.

Do any of you have any ideas of good ways to promote a new portfolio?  Anything that has worked?

Erin and I are trying really hard to get to the next arena, so to speak, but it has been pretty difficult forcing ourselves to do the work.  (Researching the specific clients, creating our mailer packets, CONTACTING real people... you know, the regular hermit type stuff....haha)

After doing some research, here are some links that I have found helpful:
http://hollydewolf.blogspot.com/2010/06/promotional-mailers-snail-mail-can-be.html

http://jonasillustration.com/blog_jonas_sickler_illustration/2010/10/how_to_market_yourself_as_a_freelance_illustrator/34/

http://escapefromillustrationisland.com/2009/11/05/escapee-speaks-7-elements-of-an-effective-online-portfolio/