Allow yourself time to work things out
Exercise is often reported to be beneficial and when combined with your favourite music it can help lift your mood. By doing this, you can focus on your thoughts and perhaps even make a decision. Alternatively, go for a walk in a quiet place. Simply becoming aware of the different stimuli around you (seasonal changes, smells, noises, etc.) can work positively on the brain, allowing you to work things out.
There are many non-pharmacological methods of self-help available, too numerous to include and many that are not evidence-based, but that doesn't mean they are not helpful. Find whatever works for you and I wish you good mental health.
 Prins, M. A., Verhaak, P. F. M., Bensing, J. M., et al. (2008) Health beliefs and perceived need for mental health care of anxiety and depression: the patients' perspective explored. Clinical Psychology Review, 28, 1038-1058.
 Non-pharmacological treatment of depression. CPD for General Practitioners website. http://gpcpd.walesdeanery.org/index.php/non-pharmacological-treatment-of-depression . Accessed 14 October, 2016.
Footnote: NICE reviewed the guideline (Apr 2016) on treatment options for depression that includes some evidence-based non-pharmacological options. Please note that the lack of a recommendation by NICE only reflects that fact there is an absence of research in that area.
 Depression in adults: recognition and management. NICE website. Updated April, 2016. https://www.nice.org.uk/guidance/cg90. Accessed 14 October, 2016.