What pairs really nicely with the learning log is another spreadsheet, called a Promotion Plan. It's a document that you'll create to use when you have a meeting with your manager to discuss your performance. (Already have that performance review on the calendar? Now you'll be prepared!)
Here's what your Promotion Plan should include:
Position requirements audit
List out the requirements of the position you would like next, or whatever responsibilities you would like your promotion to include—this can be within your department or even on another team. If you're unsure of those requirements, take someone who's currently in that position out for coffee. (Of course, if you work at a small company and moving up would involve this person losing his job—tread carefully. You don't want to come off as cutthroat.)
Then create three columns, titled "Needs Some Love, Meets, Exceeds." Fill these out as honestly as possible. When the time is right (and you might need to set a meeting), ask your boss to also weigh in on where you stand.
Label the next group of tabs "Requirement One," "Requirement Two," and so on. Here's where you can go more in-depth on any items that need some love. For example, if delivering presentations is a requirement necessity of the job you want, you should jot down anytime you give a presentation, even if only to your internal team members. If there aren't any upcoming opportunities, you should step up and volunteer to present at a meeting.
You can also use this to motivate yourself to develop the required skill outside of the office. For example, sign up for an online public speaking course, join Toastmasters, or even watch TED talks. Just be sure to log all activities related to the required skill, and any accomplishments that happen as a result.
Now, when you meet with your boss — or he or she presents the case to promote you to his or her managers—there's a document that can speak for your motivation as well as your achievements.