RAK if its serious advice u r seeking then
1. try to hold your tummy muscles in for most of the time.
2. tummy muscles in hold for 5 sec and realse and do it 10 times in a go ... and do it 100 a day it will take not much of your time
3. more tummy frndly food , crunches and i would emphasis on quality of your workout , rather than quantity.

three things that made your life easier ?