Here are some things I've found to work for me, in rough order of importance:

1. 1. Talk to people about working from home. This needs to be done regularly so I can deal with any issues as they come up. This is the most important!
2. 2. Meet co-workers face to face regularly, if practical. Otherwise use some other substitute to give a feeling of connectedness.
3. 3. Let sunlight in in the morning. Exercise regularly. Look away from the screen regularly. Stand up regularly. Eat lunch outside. Generally, take care of my body.
4. 4. Always ask myself "Am I doing something which makes a difference right now?". Most of the time I am not, so I need to be constantly reminded.

Dynamic languages actually have strict, static rules behind them which implement their dynamic features. If you learn those rules then you may be in more familiar territory. Weak typing is really just a list of rules for automatic type conversion.

The advantage of clean code is that when someone modifies it, it still works afterwards. Unclean code becomes progressively more difficult to modify until modification is impossible, and the whole lot gets thrown out and rewritten or replaced. The advantage to a manager is that when you say "Discount prices by 10% on this product range", your programmers do it and it works. With unclean code, they do it and it doesn't work, then they make excuses about how difficult it is to do what you asked. For me it's not a preoccupation with how the code looks but rather a preoccupation with how the code can be maintained later.