install a monitoring program, or buy a count machine.
you set a number daily, after a trade is done, the number is counting toward zero.after zero, the account is frozen, you can not do anything.
I think your problem is you are guilty of your trading subconciously: you know you are "over-trading", but the market always tempts you to believe or you see a setup or whatever opportunity, you jump in again, but later you found it seems not an opportunity, you got out with minor loss, and on and on, you feel more guilty,when you thought you created lots of commisions to your brokers, you almost feel you are evil..
First tell yourself: there is no overtrading such thing, your loss are not caused by overtrading or trading too much, your loss is causd by one fact: your trading skills are poor, you need hone them hard. even DOW may just move a 100points in a day, but if you trade properly, you may gain 500~1000points, the key is your trading skills are very poor!
second tell yourself: in order to gain something, commissions are part of business, so you should not save commissions to avoid the market. your focus is: hone your trading skills