Excited for myself

So I got into the graduate program I wanted to get into. It's an MSW program and I'm very excited.  My Dad is happy for me, and a couple of my friends, but my Mom and several other people are "guardadly optimistic."  I have tried a few other graduate programs in the past and decided that they weren't for me, but I'm sure about this one.  I can't wait until the fall.  It is going to be amazing.  I wish people were just excited for me instead of waiting for me to fail at this.  It's pissing me off.  I know I've made mistakes in the past of jumping into things I wasn't ready for.  I'm 30 now and sure of what I want to do.  This isn't like the other times.  It's different.  I feel to my very core that this is what I should be doing.  I've prayed about it and I know this is it.  End of story.  I guess its just too much to ask for the people I love to stand behind me, even though I'm there for them.  I'm just whining here, but I had to get it out somewhere.