Optimistic
expectant, assured, sanguine, buoyant, enthusiastic, trustful, reassured, emboldened, full of hope, faithful, cheerful, anticipative, anticipating, trusting, inspirited, expecting, anticipatory, at ease, in hopes of, forward-looking, lighthearted, serene, calm, poised, comfortable, blithe, eager, elated, Pollyannaish*, beamish*, looking through rose-colored glasses*; see also confident 3, trusting 2.
Encouraging
promising, reassuring, assuring, favorable, bright, cheering, flattering, gracious, opportune, timely, fortunate, propitious, auspicious, well-timed, fit, suitable, convenient, beneficial, reasonable, fair, uplifting, heartening, inspiring, exciting, pleasing, fine, inspiriting, fortifying, rousing, arousing, enlivening, lucky, stirring, making glad, gladdening, elating, providential, helpful, rose-colored, rosy, animating, attractive, satisfactory, refreshing, probable, good, conducive, advantageous, of good omen, pleasant, consoling, of promise, happy, cheerful, comforting, calming, proper, expeditious, enlivening.
Antonyms discouraging, unfortunate*, unfavorable.