I think goal setting is tough for just about everyone. What is often recommended for those with ADHD is to set just 1 or 2 goals, and then break them down into small incremental goals. Here’s more on that:
ADHD and Setting SMART Goals
Never Enough Time: Following Through on Goals
Penny
ADDconnect Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism