Personally I find it less about the techniques and more about framing the problem correctly. For example everything you mention are just subjects (means to an end) but you haven't told us what the end you are most passionate about is. I find college isn't well set up for this and I fell in to the same trap as you, lots of activities but very little focus.

It took me years but eventually I started focusing on what the outcomes I wanted to make happen and then started focusing bringing in the learning I needed to support this. This also helps when you have to make decisions about what not to learn as if its not supporting your outcomes then it becomes more clear you can drop it or save it for later.