to cheer up; to be encouraged (by); to be in high spirits
to muster (e.g. one's courage); to call forth; to rouse up; to be enlivened; to be invigorated
to muster (e.g. courage); to gather; to collect; to pluck up
to muster up one's courage
to exercise one's talent; to display one's ability
you are cordially invited to participate; please come and join us
energetically; strenuously; heartily