1. Taking the coursera course probably a valuable use of time, alongside more general "meta-learning" about personal psychology. Books such as "How to Win friends..." "Power of Habit..." "Wherever you go, there you are..." etc
2. Use "anki" or "ankidroid" depending on platform. Get public decks "Hiragana with stroke diagrams and audio," "Kana (katakana)," "Core 2k/6k optimized Japanese vocabulary," and use following youtube video to then create forward/backwards cards: https://www.youtube.com/watch?v=DnbKwHEQ1mA
3. Use this resource for japanese grammar and complete exercises: http://www.guidetojapanese.org/learn/grammar
4. Use this to practice listening skills: http://www.nhk.or.jp/radionews/
5. Create and write down a clear reason for learning Japanese, and potentially book a flight (well ahead of time, and if economically viable) to set a concrete timeline for learning.
EDIT: By the way, the "Core 2k..." cards have example phrases for every word. I don't recommend trying to memorize these, but I do recommend reading the sentence out loud for every card. Muscle memory, further familiarity with grammar, helping sort whether a given verb is a ru- or non-ru verb, etc.