I'm so sad

Man, it's been a long day
Stuck thinking 'bout it driving on the freeway
Wondering if I really tried everything I could
Not knowing if I should try a little harder

 Just sitting here, trying not to look back
Still looking at the road we never drove on
And wondering if the one I chose was the right one
Oh, but I'm scared to death
That there may not be another one like this
And I confess that I'm only holding on by a thin thin thread