Here are the 4 easy to follow recommendations:
1-Forget improvisation, be prepared!
2-Bet on total compensation. Dare ask for higher conditions: Additional weeks of vacation, tools, cell phone, the split between the office and home (telecommuting), a system of commission or bonus.
3-When negotiating avoid spreading all your financial problems, they may not convince your employer. A potential increase in salary will be based on the benefits you provide to the company. Bet on increasing your tasks and on your participation in the recent success of the company and especially …
4-Be confident! Do not feel guilty for asking.