I have had an unusual lack of energy lately. i've tried things ranging from extra sleep to dietary supplements. should i be concerned about this?

Fatigue: Sleep is definitely important. Not because you get more means that it is quality sleep. Ex. If you have sleep apnea you will not get full reparative sleep. Another important point to take into consideration is hypothyroidism. This will lead to weight gain, tired, less sharp mind. Worth checking. Your diet is important. You are what you eat. Finally exercise is also something can give U a boost