My wife was never really into athletics. She likes to exercise, but she doesn't "get" my need to lift heavy things... at all. That's okay and, actually, I wouldn't have it any other way. You see, I really do believe in the idea of couples shoring up each other's weaknesses and complimenting each other's strengths. My wife keeps me from becoming a total meathead, and I keep her from being a total priss. We have our differences from time to time and, occasionally, issues concerning my "hobby" come to a head, but we've been together for a long time now and I've learned a few things about keeping training time sacred.
Make your training goals and plans clear to your significant other. Make your training plans clear to your significant other well in advance. Having a large calendar with training times written down in a central location shares your level of commitment with everyone.
Training in the morning can be invigorating. Training late at night can be a great stress reliever. Be flexible about when you are willing to work out. It will make finding time to train a lot easier and inconvenience everyone else less.
For the record, I'm just like most people and, if I had my druthers, I'd be training in mid-late afternoon and have a solid, uninterrupted 1-2 hours of time to work with. However, since my son was born, most of my training has been in the 9pm-12am time slot, with a lot of 15-30 minute sessions thrown in wherever possible.
Consistently finding hour or two hour blocks of time is tough enough if you are a working man (or woman). Finding a half hour here and there is a lot easier.
Split your training sessions into main exercises and assistance work and do them in separately. With focus, you can ramp up to respectable poundages and get in your work sets in a much shorter length of time than you are used to. It may require a few weeks to acclimate to the new pace, but it's doable for most. No more putzing around with your iPod, cell phone, preening yourself in a giant mirror, staring at the gym "eye-candy", or long water breaks - get in and get out!
(or anniversaries, birthdays, Valentine's Day, etc.)*
Training sessions scheduled on "date nights" are a major no-no. And, (if you didn't know this already) it doesn't matter if there are no plans whatsoever - do NOT schedule anything on your spouse's day off, Valentine's Day, major holidays, etc.
I know what you're thinking; "But Christmas Day is a perfect training day!! Nobody else is in the gym and I have so much time!". You're preaching to the choir, buddy. Give it up. You can't win. Spend the time with your partner. ...and NO, I don't mean your training partner!
Gestures like the occasional "Aw, what the hell - I'm supposed to train, but I'd rather be with you honey!" can go a long way towards fostering good-will. ...and who knows if it's spontaneous or if you managed to get your training session in earlier in the week? Front load your training week and days like this are easier to come by later in the week.
I don't make much and every year is in the red when it comes to lifting expenses vs. coaching income. That's okay because I don't do it for the money. On the other hand, I can't be spending money irresponsibly either - it's easy to rack up costs in the thousands of $$ when you are buying equipment, traveling to competitions and seminars, paying for gym memberships, and reading S&C literature.
Learn how to say "no" when it comes to unnecessary lifting toys. Do you really need that #2.5 CoC? Can you do without this month's PLUSA even though it has that Dr. Judd article you've been waiting for?
Find ways to cut costs elsewhere. Ride a bicycle when you can. Give up that daily can of Coke from the vending machine. Eat out less.
$5 here and there adds up very quickly - we all know this, but deny it when it suits our moods. Don't indulge yourself in that line of thinking anymore and your spouse will see you as a more responsible person and be secure that training hasn't turned you into some neanderthal man that puts lifting metal, stones, and sand on a pedestal higher than the love of his or her life.