Aside from the recommendations above, I would also recommend the Knight Warrior Mindset and the Lion or Thor / Mjolnir mandalas.
Aside from fields…If I made such a statement to myself, I would SERIOUSLY question my current state of life in general. Why am i unable to take action? What does that even mean? If I have fitness goals, can’t I do a single push-up a day? If I am learning a new language, am I not able to go through ten vocabulary cards a day?
Further you say…you feel like you are unable to. That feeling is there for a reason. Is it fear? Fear of what? I recommend the exercise I suggested recently: Look at your current self; now imagine your current self in a few years - without any changes. How do you feel? Now imagine your improved self in a few years - how does that feel?
If you have the freedom to feel like not being able to take action - then it is seriously time to take action!