I want to be more loveable.

Hi
I was surprised. my part time always too busy to meet, emails me twice a year, part time friend for 30 years described me as a jealous and bitter man.
She forwarded a you tube video and said nice to hear from you and then in my reply to her, patchy email back, I said that her house, after the house improvements, would rival South Fork Ranch and that her job must be steady to undertake such an expense.
I wrote that because in the past she had changed jobs often and some of these jobs were for temporary stints that taking such a worthwhile task meant two thing; a nicer home and a little more job security. I often describe my life to her as it is but these mere observations, never that everybody has it in for me and I wish them a bad time.
However when my friend called me jealous and bitter and that I wished others had a tough time too. It made me think what if despite my best foot forward fair minded say it like it approach may be she's right. How do I reconcile myself and change my ways to be a considerate caring affectionate person?
I am 51 and I have been in the same job 30 years my family is my wife and our two boys 18 and 15. I have been stupid and racked up huge debts but me mange in a fashion. I guess I talk too directly and have a slight; know my level approach when dealing with people but am try to put myself across as a very fair person with my actions and words and I try to be consistent too. But I am old not much of a success mostly alone what can I do now to make my self a more loveable person?
Thanks
Bharat