Supply and demand.
Do something (learn something, gain a skill, get a credential) thatfor which companies have a higher demand for, than for what you do now, and/or for which there is a lower supply of talentavailable potential hires. The change in supply and demand will eventually effect the market price. If your current company wants to keep you, they will have to match the market price, orrate salary. They will know that you can go elsewhere and get itthat salary, and they likely will have to match that market rate salary for your replacement.