I have so many offers that I can't do them all. What is your advice?

As an example--I know of a very popular jewelry artist who has a waiting list. It is years long. But that way the artist never has to say no or turn anyone away who is willing to wait.

If the opportunities coming in have deadlines, then perhaps you can attend to those first and put the others on the back burner for later.

A mentor and artist friend of mine, many years ago mentioned that at some time you do have to make a choice as to what venues you will be participating in.  Nice to know you have come to that point.  You should determine what your career goal is and participate in the venues that will support your goals the best!

Raise your prices for starters. Assess your ROI and stress factor for each. Be clear with the requestors if you aren't going to take on their project so they aren't left hanging. Be grateful, as it's a nice problem to have. Hope you have good time management skills : )

A high-class problem. (:^D)  Which jobs will cost you less to decline in the long-run?  Which relationships do you prefer to cultivate (or sacrifice) if you have to choose among them?  If it's a choice between different types of artistic creation (e.g., writing, painting -- just guessing), which mode of expression will accelerate your path to fulfillment? 

Pick most interesting. Great problem to have. Or Maybe you focus is too wide.

That's a problem I'd love to have. Prioritize with the thought of first come, first serve, as well as what is best for you. Tell the others you're swamped but if they could wait, (give a time frame), then you will be more than happy to fill their order. In the time-frame, leave time for projects you may receive that will need priority.

It is difficult to juggle writing at times--it seems to be feast or famine. Add in the art and your other work and it can be overwhelming. For me, I usually take assignments from my best writing contracts first and move down from there with a caveat to the other editors that while I would love to do the assignment, I am just spread a bit thin right now and would welcome future consideration. I also often pass on assignments to other colleagues as a nice gesture as well. You may wish to do your most lucrative work first and then add what you love after that. 

Go with the ones that take you in the direction where you really want to go.  Pray about it and consider all your opportunities.  Best of luck!

Either A:  First come, First Served, or B: Look at the amount of time each would take.  Try and do the ones that take the least amount of time first, so you can get more done in less time.  Unless of course, one projects payout blows away all the rest.

Choose the ones that excite you the most !