Christ was/is passionate - I think He expects us to be so also. He has provided us with all that is worth living and dying for and we owe it to Him to carry His Word as passionately as the Evil One pushes to deligitimize Him.
And one area of shyness of witness that I believe can be remedied (I personally pursue this through poetry and songwriting) is to relate the witness of Christ through the creation back to Christ himself.
Some weird things have resulted — I call them weird in a self deprecating way. Ever think of Jesus as a redneck? I have. Much of His biblically documented background is roughly in that vein, although the term is a modern one. The result, love it or hate it, was this:
https://soundcloud.com/daniel-levy-6/a-humble-redneck-i-was-born
But the redneck himself/herself is an American phenomenon... which in turn harks to its gospel believing foundation. They aren’t separable.