What can i do that my husband cant be a bread-winner?

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we are paying an apartment on mortgage, which almost drains all my income---my husband sometimes fails to earn any. He doesnt have a professional job that could have contributed to our mortgage. He bet all his hope on getting commission as a middleman but seldom made it. I feel heavy burden on my shoulder. We have been together more than three years, where i have been working to get steady income, trying to make the ends meet. I feel very tired and stressed. How rough and dark our life journey will be lying ahead? I advised him to take a job. He tried and got a job indeed. But was fired after two months, which i could foresee. Serious with his work, but couldnt do it well. Very lame as i observed. As a middleman or i put it businessman, he is not sociable enough. Also not flexible enough. He tends to kick the ball to others instead of thinking of some solutions. Tears, tears....