Feeling 'bout half past dead, I just need a place where I can lay my head

The road to happiness is confused and stressful.
There's a lot of obstacles in the way.
A few things that are all part of the path, but get confused as being obstacles.
A few barriers that are seen through rose-coloured glasses as being part of the way.
And more than a few shades of grey.
I wonder if barriers or parts of the path ever turn up again?
I wonder if they change form?