This proved to be very cumbersome.

Today children are constantly encouraged to grow up faster, as if this period known as childhood is a burdensome stage, to be endured and ushered through, as swiftly as possible.

She does not wish to let the guy know. & not wanting to be a burden to him, she wrote a letter to him saying that she does not wish to wait any longer.

Being led to believe that old age is a nothing but a burden to others does not make the "dwindling" period any easier.

I felt like I was a burden to those around me and the sooner I go, the better it'd be for everyone.