I have a bit of a system. I start with only $40-50 on two tickets, if I lose I will buy two more. But I don't allow myself to exceed more than $100 of my own money per week. If I lose the $100, then I won't play again until the following week.
If I win all of my money back, I will play again. So if I end up chasing then it's with the same $100 that I am already comfortable losing.
If I win more than my $100 back, then I will continue to play but I always try to bank at least 60% of what I win.
I always ask what number my favorite tickets are on: Flamingo Fortune, 100X Cash, new GR & old Gr. I have a group of numbers that seem to always pay out, though sometimes I am wrong. But if you read back a few posts here, several people in my area won top prizes on those games, so I decided to switch to Super Millions and Monopoly this week. I have only played at one store the past few weeks, because I seem to do well there. All of my big wins come from 3 stores that happen to be at the intersection 1 block from my house.
With all that said, I am fully aware that my winnings are still pure luck. Happy scratchin'!