Now for your actual concern -- well, yes, getting rid of akrasia is valuable, but it's not necessarily economically valuable, in that not all related self-modifications increase your future potential to earn, or provide you with some good of an economic nature.

So you claim that you don't have any akrasia for activities that would earn you money?

Social confidence that gets trained in the example above is quite useful when it comes to succeeding at job interviews and negotiating for a higher paycheck.

I wouldn't say that my own social confidence is very low but I know that I would make more money if I had higher social confidence.

To the latter question, people on LW seem to give a hearty, unambiguous "YES".

I wouldn't. Some people are practiced stoics who wouldn't flinch when they lose money. Those people don't profit from commitment contracts.

On the other hand valuing your money doesn't result in commitment contracts being useless. It rather should make them work better.

I would also add that not every commitment contract has to be about money. You can do something like clean the flat of one of your friends if you fail your commitment. There are many ways to find uncomfortable things that you can use as punishment for breaking a commitment contract that don't involve money.