Is my furnace dying?

My furnace is about 10-12 years old.

In November, my furnace stopped working and the repairman said something had to be moved around, and it worked after that.

About a month later, it stopped again and the igniter had to be replaced.

On Monday this week, it would try to come on but never would. So I turned the thermostat off and waited a few hours. When I turned it back on it worked again.

This happened again Wednesday night.

Now it has done it again, and I currently have the thermostat off waiting for a few hours to see if it'll work again.

Think I'll have to replace the unit?