What are people blaming their tiredness on? I often hear people complain of tiredness and why they feel tired or even exhausted. It's natural to feel tired, but exhaustion for no apparent reason is something else.
One area to look at is Decisions and Decisivness.
Not concluding things that are playing on your mind will rob you of your energy and possibly your future. Some decisions are really tough to make and can have serious consequences.
Not tackling these will usually have much worse consequences than tackling them.
Working with someone can help greatly, you'll brainstorm new ideas and then you'll have support in making tough decisions and keeping them.
Don't rob yourself of precious energy or even your future. Make those tough decisions now.