It's a sad story that sometimes, when our hearts are at their most full, we find it hardest to tell God how we are feeling.
I was pleased to come across this quotation which seems to say it all:

'God understands our prayers even when we can't find the words to say them.'

It's not known who first wrote these words, but it's certainly a comforting thought to remember when the problems that surround us seem too big for us to cope with.