A "good attitude" means having a positive outlook, being kind and respectful, and being determined and motivated to do your best in everything you do. Full definition
I am passionate, very sensual, loyal with good attitudes. (adatingnest.com)
Either way you're probably going to get the project done by the deadline, but you'll have a much better attitude about it the first way. (policygenius.com)
These students also tend to have better attitudes toward school and more positive relationships with peers and adults. (sel.cse.edu)