If you feel like you're in a funk, here's an app you might find useful. Daylio is a mood tracking app. Every day, select the mood that best describes you (from “rad” to “awful”), and take notes about the activities you did that day, like biking, work, out with friends, or cleaning. Then, at the end of the month, you can look back and see how your moods tracked. Is there a pattern? What was your average mood for the month? Do certain activities lead to certain moods? Are there days of the week when you're more productive or more stressful?
You're also able to keep a daily diary, set reminders and events on the calendar and back it all up on your Google Drive.