How can our marriage last?

I am 23, my husband is 25, we have been together for 7 years, married only 1 year. I was born in America, he was born in Brazil and raised here illegally since age 1. We were each other's first real relationship and first love. We have gone through many hard times, our first years dating were hard when he had trouble growing out of being immature and being violent at the same time I was dealing with depression, and we were both jealous of one another. Now that we are older he is a great guy, we trust each other and he has definitely proven himself as being a changed man. I always wanted him to be this way before, now he is exactly the man I wish he was, but now it doesn't phase me. I put no effort into fixing our problems and he constantly is trying to work things out. I have been secluding myself a lot recently and he has really been trying to work out our problems but I don’t feel like I have much energy for this relationship. He loves me and shows it everyday with little things like making me breakfast, packing my lunch, taking care of me when I'm ill, he tells me he loves me often. The only area he lacks is with his citizenship. Part of the reason I am distant is because I recently got a promotion and I don’t’ want to lose my job. (I'm not at risk of losing it, but I don't want to give any reasons leading to risking it). I have been aiming for this financially. I keep a low personal profile at work, just because I know questions will start flowing in once the simple talk runs out. I haven’t told any of my coworkers I’m married. I haven't lied and said I was single either. I just stay off the subject even when they ask who he is. I don't want coworkers judging me because I'm with someone who is not financially stable because no one understands his reasons for being unemployed. Recently they've been asking and I don't say I am single but I don't say I'm married. I pretty much give the run-around. (All my coworkers are women over 38 and 3 men over 50 so I’m not trying to seem single to hook up with anyone). Not acknowledging my husband hurts his feelings. I guess I am embarred of the situation and I take things people say harshly. Our relationship is suffering because I have been wrapped up in school and work, I am away from my husband Monday through Friday 7:00am-10:00pm. I am busy during the week so I don't have a lot of extra time aside from late nights and weekends. I have weekends off and I usually spend my extra time going back to work for a few hours on the weekends (free time I’m putting in without getting paid for), or on the phone, or with friends; in other words - I seldom spend time with him. He wants me to stop working on the weekends, and turn my phone off when I get home, and disconnect from friends to spend more time with him. But I am devoted to my job and want to have a social life too. I do get some time with friends (in cl during the week and with some friends while working) I don’t feel that time really counts as a social life since the basis is work. I put other people first then spend whatever time left with him, he feels sad about this but I get frustrated because he doesn’t understand that I want time to do things too. He thinks I’m selfish because I have had money for a lawyer to help him with his citizenship status a few times but subconsciously I wanted to personally get myself established with materialistic things. I can’t help but feel like a selfish teenager that just thinks about herself. I know we are married and we are supposed to help one another but I am always out for myself and then think about his needs, I just run away from the financial burden that falls on me. I am not sure what's the best solution is?