I recently took over an old house and plot of land not used for ~20 years.

In that time, the main lawn is still grass dominated and fairly easy to cut. But many areas have become completely swamped with different bushes and willow.

I cut it all down twice per year but it shoots up like a jungle next year anyway.

Parts of old farm tracks have of course become unrecognizable and are slowly turning into a forest.

It's hard and tough to walk, you can't see properly as plants can grow quite tall (plus elevation differences).

I love plants; but for human enjoyment and passage between different areas on a plot of land; grass is superior. I dream of grass.

Seems like planting a tree there would address most of the issue.

A birch growing for 5 years is already 3 metres tall and will prevent anything larger from growing around it.

Sounds like you need to get a couple goats