positive and hopeful
sanguine - optimistic
If you are ‘sanguine’ about something, you are optimistic that it is going to work out in your favour, even if that may seem unlikely at the time. It is a formal word that is most commonly used in a professional context, particularly in relation to a political or economic situation.
Our manager is facing mounting problems with the project, but she has remained remarkably sanguine about it all.
Due to the latest developments, diplomats are less sanguine about the chances of a peace treaty.
Despite the crisis, there is a great sense of sanguinity in the country, which is a credit to the people.