How do you turn negotiations in your favour?

1. Know very well what your goal is and how you want to achieve it. Know the subject through and through. Develop a strategy. Make sure you have prior knowledge and expertise.
2. Make the service or product scarce.
3. Make sure there is a difference in the hierarchical position of the negotiators.
4. Have time or be in a hurry, depending on your goal, this can put pressure on the barrel.
5. Don't come up with all the information at once. 
6. Use limited authority. Say that you cannot decide alone and that you still need to discuss.
7. Control your emotion. Investigate the counterpart's.
8. Don't blow up bridges. Not even with no result. 9 Always leave a door open. 10 Keep the relationship intact. 

“Success is not final, failure is not fatal. All that matters is the courage to keep going." - Winston Churchill, statesman.