Hello there, may I help you?
It would be a good idea to observe your child in a situation where he breaks something to see if you think it was deliberate or an accident. As Kansas therapist pointed out it may be down to motor skills, but it may be that there is a developmental problem with his motor skills and it would be a good idea to get him an assessment check.
His reaction to breaking things sounds as if he is very remorseful and doesn't intend to cause upset and damage. If you can sit back and witness a particular occasion when this occurs it may help you to decide what the problem is and how to deal with it.
This is an interesting article which offers some good advice and information. http://www.parenting-advice.net/kids/my-child-keeps-breaking-things.html
Most importantly you and your husband need to work together here to help your son so you need to sit down together and decide a away forward which you both agree on.
I hope I have helped answer your question, please accept if you are happy with my answer.
yes I completely agree with what you say, self esteem in built upon during childhood, and this in turn could be affecting your son and his self esteem as he grows and develops. I think your husband needs to recognise his value to your sons upbringing too! Fathers play a very important role too!
This is an excellent book for your husband to read available from Amazon, Overcoming Low Self-Esteem by Dr Melanie Fennell. Alternatively How to Raise Your Self-esteem by Nathaniel also from Amazon, I really hope this helps and your husband should be praised from recognising this problem and asking for help with it.