One thing leads to another.

Sometimes, it's better to retreat and live to fight another day.

One good turn deserves another.

As one door closes, another opens.

One nail drives out another.

They make fish of one and fowl of another.

Some people make fish of one and flesh of another based on their appearance.

One bad turn deserves another.

One man's meat is another man's poison.

When one door shuts, another opens.