I am making an application in C# which uses a winform as the GUI and a separate thread which is running in the background automatically changing things. Ex:

public void Run()
{
    while(true)
    {
        printMessageOnGui("Hey");
        Thread.Sleep(2000);
        // Do more work
    } 
}

How would I make it pause anywhere in the loop, because one iteration of the loop takes around 30 seconds. So I wouldn't want to pause it after its done one loop, I want to pause it on time.