Do you know the basic reason why you want what you want?

For a start, are you sure you know why you want what you say you want?
Okay you say, sure I know why I want to win $100,000.
I want it to be able to buy a house.
So why do you want  to buy a house?
Well I want to buy a house in a city so I have good opportunities for work.
Why do you want to work?
Well I want to be able to help people and living so far out means it's just not possible to get to all those people.
Ah, so you want to win the $100,000 so you can help people.
Well that does make sense, but couldn't you just rent a house in the city and help people?
Yes I could, but eventually I wouldn't be able to pay the rent because it is so high and I am getting older and don't have exponential opportunity for jobs.
So really it's better if I can buy the house outright, then I can focus on helping people, and not focus on getting poor jobs as I am at the moment.
Ah so you really want to win the $100,000 so you can help people.

This process of whittling down the real  reason is extremely beneficial, because it puts your request to the Universe in basic terms and gives you the feeling of gratitude and expectancy that are essential to manifesting your desires.
Things have a habit of multiplying when you have a habit of appreciation!