please help me with this

I want to preface this with saying that my boyfriend is such a wonderful man and I love him so much... but I've been struggling lately. We make about the same amount and it's clearly not enough- so every month I dip into my savings to cover the rest. I'm incredibly stressed because along with looking for a second job, I'm in school full time, just completed my yoga teaching cert, and am in the process of completing my personal training cert. I'm doing all of this so we can eventually make more money- but he's content with his single low paying job. I try to talk to him about it but he gets very defensive and I don't know how I can be any more sensitive while also making him realize that this is serious. I'm beginning to become completely depressed because I feel like every second of my life is spent stressing over something and I'm starting to have suicidal thoughts. I'm scared to tell him this as well because I don't want him to think he's not enough or this is his fault. I feel like a broken record and I know he's getting sick of hearing about it. How do I approach him without hurtng his feelings?