When giving a "get well" card, write a positive message such as, "Wishing you a restful recovery. All my best." Or you can write, "Best wishes for a speedy recovery. My thoughts are with you." What you choose to write depends upon your relationship to the receiver.
If sending a card from a work group, you may write, "We miss you at the office! Get well soon!" Or you can write, "We are all thinking of you during your recovery. Relax and recuperate!" Lighter sentiments include, "Better you than me! Hope you are back to your old self soon!" Or another light message is: "Get those feet up and relax, because we miss you around here! Get well soon." You may also choose to include a religious thought, such as, "My prayers are with you during your recovery."
If the person had surgery, you can write phrases such as, "Sending our best wishes after your recent surgery. We hope you recover quickly!" Another message for a person recovering from surgery is: "I hope your surgery went well. Praying you quickly return to good health." Inspirational sayings include, "Wishing you on the path to recovery. Sending positive thoughts your way," The thoughts you write in the card can reflect your relationship with the card recipient.