"You Can't Walk on Water.....If You Don't Get Out of the Boat"....God

"You can't walk on water...if you don't get out of the boat....God"    I saw those words on a semi truck today as I was driving down the road. I don't know if I was on I-95, Stillwater Ave, or where, but I read those words. On the side of a truck. A huge semi truck. White truck, black letters. Big letters; took up most of the side of that truck.  No other insignia on that truck. Just those words.
I truly believe God is up in Heaven, looking benevolently down on us mere mortals, face shining in pride as He watches His creations.....then he sees me.  That's when He just puts His head in His hands and ever so slowly starts to hit His head against the wall.  I can be a pretty stupid person at times.  OK, "stupid" is a  little harsh, and "at times" is a tad bit on the conservative side, but still......
I know He's trying to tell me something.  He keeps giving me enough hints to tell me I need to let go of my insecurities and get started on a new path.  I'm almost positive it has to do with writing.  But, I'm so scared to take that first step. What if I'm not good enough; what if I run out of things to say; what if no one likes me; what if....what if....what if.....
I don't have a degree in writing. I've never done it professionally. I don't know if I'll be interesting.  Blah...blah...blah.....  But, as the saying above says, "I you don't try....you won't succeed."  Ok, not really the same words, but the idea is there.  I know He wants me to do something, but I need to find out exactly what it is.  Of course, part of my problem is that I think I need to find out what it is before I start anything.  Actually, I just need to start looking and continue living, and it will be revealed to me.  I believe that with all my heart, but I have to get out of my own way so I can accomplish it.
Here I am, minding my own business, the weight of my world on my shoulders, wondering(worrying)  how in the world I'm going to be able to pay the bills, when coming toward me is this semi with those words on it!!!!
I need something that  has flexible hours, and writing is the only thing I can think of that I'm relatively good at.