"Can-do" is a term often used to describe someone who has a positive attitude and is willing to take on a challenge. However, there are many synonyms that could also be used to express this same sentiment. Words like "capable," "competent," "resourceful," "confident," and "determined" all convey a similar message of being driven and able to succeed. Other options might include "resilient," "self-assured," "proactive," and "versatile." No matter which synonym is used, the underlying message is that this person is someone who can tackle any task and come out on top.