I've found that one can have dreams of what one is going to do (travel, study courses, moving house, sport and so on) but that life may turn out to be more difficult than previously envisaged.

Health problems, accidents, family disasters, financial blows, anything might crop up and one's happy ideas fly out of the window.

A lady in our village was driving a horse and governess cart down the main street when the horse bolted, the chaise overturned, she was thrown out and the Air Ambulance had to be called.

She's now permanently paralysed from the waist down. She's home, but her elderly husband has had to have all sorts of equipment installed (hoists, wet room etc) and carers coming every day to bath and dress his wife.
But we all think they're slowly adapting to this restricted life. The lady ran the riding school in the village, and manages to keep track of its progress from her wheelchair. Visitors arrive often to cheer the couple, and they just 'keep a-troshing'.
Humans are quite adaptive and can adjust to all sorts of set-backs.
It can't be easy obviously, but it's amazing how things carry on somehow.