Hello the best way to convince your spouse is staying focused until you achieve success. Be prudent with your expenditure. When you eventually make enough to quit your full time job and put food on the table through your SFI business you won't need to convince your spouse, family or friends; they will respect your tenacity and prudence. The respect you earn will make them supportive and help you succeed in the 'warm' market. Keep at it and all the best.