Well, I have my reasons.
Sometimes I tend to "panic sell" some when I see the market is going down. Or I am bored, deposit some at Poker or some sports bet site where there is a possibility to lose.
I basically want to lock it away for a certain period of time (not long, but continue locking it after the lock expired) since I don't need it at the moment and I don't want to have the "temptation" of using it for whatever.
I know how to store my bitcoin, I am not looking for that.
Well, if you panic, you should train yourself not to panic easily or be tempted to make deposits with your Bitcoin. You should be able to control yourself for this, because there is no other way than to control yourself. If that's all you can't do, I don't know what else to say.