Oh mummy guilt's a killer!!! You are great ... you're kids are great and will do great because you love them and provide for them 110%!!! I've taught in some tough schools where the kids come in with basic 'oral language' ( 2/3 word combinations no sentences) and by the end of kindy they have progressed in amazing leaps ... kids are little sponges ... enjoy them and let them be 'little' for as long as you can ... my opinion ... for what it's worth