Let's say for example that you chose Sunday, you watch the fixtures list and pick from that list the 6 most well-known leagues for you and you start writing them down in the way you know them best (ex: France (the best), Italy (second best) and so on).
After you have done this you pick in each league 1 or 2 of the most interesting games (interesting as you know the style, form motivation etc. of the teams very well) and you will end up with around 10 games wich you know very well and you probably have the sufficient information to pick the correct tip.
From those 10 games you pick 3 games (always 3 - not 2, not 4) - the games you feel most confident about and bet 16% of your current betting bank, if you lose your first bet, next time you will bet 24% of the funds you have left and so on.
Until now this method has proved to be very profitable for me, I hope it will be for you too.