What helped me the most was putting my ironing board perpendicular to my machine to hold up the weight of the quilt and buying a stitch in the ditch foot. These two things together have made me actually enjoy the quilting process. I get a great deal of satisfaction from it.
I did have to learn patience...but then, I am still working on that. I have only been quilting 2 years. It does get easier with practice, and I sure wish I had started on something small...but I didn't.
Your quilt is beautiful, and you will be able to quilt it. Just take your time.