Improving sleep by sticking to regular times for going to bed and waking up; keeping the bedroom quiet and at a comfortable temperature; reducing daytime napping; avoiding eating and drinking late at night; and relaxing before bed by taking a hot bath, listening to music, reading or using a relaxation technique.

Taking regular exercise, as this can increase energy levels. It may be difficult to contemplate for those who are feeling tired, but the key is to start with something small but regular, such as walking, then slowly increase the duration over weeks or months with the aim of improving fitness, strength and stamina.

Reducing stress levels by introducing relaxing pursuits such as yoga or spending time with friends. 

Stopping smoking and cutting back on alcohol. Both can affect sleep, which in turn impacts energy levels the next day. Reducing these slowly may be easier than quitting abruptly and will help limit withdrawal symptoms. 

Eating a healthy diet with the aim of getting to and/or maintaining a healthy body mass index (BMI). 

Planning activities so that a frantically busy day does not result in being unable to do anything the next day because of exhaustion. A little every day is much more sensible.  

Managing expectations so that they are realistic in terms of improving energy levels and maintaining them. It can be helpful for people to reflect on whether they were expecting too much of themselves and if they have struck a good balance between work and other obligations, rest and leisure activities.