I don't know what to do with my life?

I am currently a sophomore in college and I was going for medical sonography. I’ve come to a hard conclusion that the medical field is not for me. I want to earn a degree that I could go far in and be able to earn a decent salary. But every time I try to go for something I loose interest really fast and want to move on. I want a career that I’m passionate about and I don’t want a job I cant enjoy. Everyone around me is pushing me and pushing me. Causing me to be more stressed about what I want to do in life. Has anyone experienced this? How did you overcome it? I am currently married and have two kids. While my husband is caring he also wants to switch. So he can go to school and I can provide while he does this. It doesn’t seem very fair to him if I can’t make my mind up about what I want to do…