Dealing with anxiety while miles apart

My husband and I have been married for a year and he has always been my rock through dealing with my diagnosed bipolar disorder. When we first met I had already dropped out of college and started taking steps to manage my anxiety and control my emotions. After he graduated college, we got married, then he and I both worked our butts off so I could afford to finish college. Right as I got readmitted into school my husband got the opportunity of a lifetime to work an amazing job in another state. Due to many factors our best option was for me to stay here and finish my degree while he works in another state. He's been gone a month now and classes just started for me this week. I am so scared of failing because that would mean that all of the sacrifices we've made together would have been for nothing. All the efforts he's putting into working while I'm not would be for nothing. I'm so scared and I need advice on how to handle the weight of my own expectations.