One quick and easy way to increase your focus and concentration is to take breaks. Take a moment and time how long you can maintain focus and concentration on a few different projects. Use the average time before you start losing focus as a guide for when you take breaks.
If you find you can only concentrate for 20-30 minutes at time, take a short break for 5 minutes every half hour. This could be as simple as getting up and going outside or just taking a few minutes to recharge.
By working in cycles you will find yourself much more efficient and productive in the time that you are working instead of dragging and trying to finish a project.
It also helps to use your most productive hours to complete your most difficult projects or tasks.
Adaptogens are a class of herbs that help your body run better in whatever state you are in. If you are in a stimulated state or a state of rest these herbs help your body normalize and adapt. Rhodiola is an example that is commonly found in a variety of herbal supplements such as nootropics or stress formulas.
Long term and acute levels of stress can wreak havoc on memory. Bacopa is an adaptogenic herb that is used to guard stress from having an impact on the brain's ability to perform.
Bacopa plays a key role in boosting serotonin and GABA, two very important neurotransmitters in the hippocampus known as the center for memory and emotions.