"bless" is an irregular verb -- bless - blest - blest

It means to feel thankful and lucky for having something. He feels blessed for having had such a great high school basketball coach. She feels blessed for having such wonderful and supportive parents.

you will also hear the older version blest in British English very often. same with many other words.

Other people might use this term to express their belief that they are "blessed" or have received a gift from God. For example, "I have always considered my good health to be a blessing". Hope this helps

bless you, Dear Brad