With our busy schedules, we tend to take care of others rather than ourselves and one of the first thing we lose is time to workout.
I find the best time for fitness is first thing in the morning. If you get your workout done first thing you have a strong sense of accomplishment and you will feel better the rest of the day.
My rule of thumb is to do 6 exercises every day, sometimes I repeat the same moves if it is an area I want to improve on. All you need is 15 minutes in the morning and another 10 to 15 minutes at lunchtime and trust me; you will feel so much better.
I try to look at working out as a way to stay healthy and young. If you do a little everyday, it goes a long way in your health and wellbeing. Stay consistent and diligent and you will feel better and look great.