Officially: you should talk to your PCP and not a forum of football/basketball fans.

Personal thoughts:
1) Find the pair(s) of shoes that cause plantar fascitis the next day. There is a chance that your footwear is making the problems even worse.
2) Stretches in the morning. use a tennis ball while sitting at the desk for work and stretch out that muscle.
3) Significant Other can hopefully knead through the fascia and help massage out the pain.


According to UpToDate:
TREATMENT

General approach to therapy — We generally take the following initial measures (see 'Initial therapy' below):

●Performing of stretching exercises for the plantar fascia and calf muscles, which the patient can do at home.
●Avoiding the use of flat shoes and barefoot walking.
●Using prefabricated, over-the-counter, silicone heel shoe inserts (arch supports and/or heel cups).
●Decreasing physical activities that are suggested by the medical history to be causative or aggravating (eg, excessive running, dancing, or jumping).
●Prescribing or recommending a short-term trial (two to three weeks) of nonsteroidal antiinflammatory drugs (NSAIDs). Use of NSAIDs is reasonable, but their long-term use should be reserved for patients with known systemic rheumatic disease.
●Injecting the tender areas of the plantar region with glucocorticoids and a local anesthetic.
In patients without sufficient improvement from initial measures, more costly therapies can be considered, although these remain unproven (see 'Unproven treatments' below):

●Molded shoe inserts (orthotics)
●Night splints
●Immobilization with a cast
●Extracorporeal shock wave therapy (ESWT)
Surgery is generally reserved for those patients who do not respond to at least 6 to 12 months of conservative therapy. (See 'Resistant disease' below.)

Initial therapy — Treatment of obesity, symptomatic flat feet, and systemic inflammation should be undertaken when these conditions are present. Otherwise, treatment should begin with conservative therapy including measures to relieve pain, alterations in shoes or habits, and exercise therapy. It should be noted that there are limited data for the effectiveness of most of these modalities in the treatment of plantar fasciitis [34,44].

●Rest and icing may give initial pain relief.
●NSAIDs are often used. A well-designed but small trial that randomly assigned 29 patients to NSAID or to placebo reported a nonsignificant trend toward improved pain and disability in the NSAID group [45]. Use for longer than two or three weeks should be reserved for patients with systemic inflammation.
●There are conflicting reports on the benefit of resting padded foot splints [46-49]; these splints can usually be purchased in pharmacies that feature orthopedic supplies (picture 3). The splints are worn at night to keep the ankle in the neutral position with or without dorsiflexion of the metatarsophalangeal joints during sleep. A clinical trial reported they were of similar effectiveness to custom-fitted orthotics (see below), although there was better compliance, as well as fewer side effects, reported with orthoses use [50].
●Prefabricated silicone heel inserts combined with stretching exercises (see below) may be of value [51]. Felt pads or rubber heel cups appear to be less effective than silicone inserts; magnetic insoles have not been found to provide additional benefit compared with nonmagnetic insoles [52,53].
●Wearing slippers or going barefoot may aggravate symptoms or may result in a recurrence of symptoms. Thus, the first step out of bed should be made wearing a supportive shoe or sandal.
●Patients who work or reside in buildings with concrete floors should use cushion- or crepe-soled shoes. Excessive heel impact from jumping or during walking should be avoided.
●Athletic shoes, arch-supporting shoes (particularly those with an extra-long counter, which is the firm part of the shoe that surrounds the heel), or shoes with rigid shanks (usually a metal insert into the sole of the shoe) may be helpful. Shoes with these features can be found in stores featuring work shoes or “orthopedic shoes.”
●Exercises may be beneficial, although evidence is limited [54-56]. Home exercises include plantar and calf-plantar fascia stretches (figure 2 and picture 4), foot-ankle circles (picture 5), toe curls (picture 6), toe towel curls (picture 7), and unilateral heel raises with toe dorsiflexion (picture 8) [57]. Ultrasound therapy, ice massage, and deep friction massage may be used prior to exercise, although their effectiveness is unknown.
●Tape support of the affected plantar surface, a technique referred to as low-Dye taping, may be beneficial to some patients particularly for first-step pain [58-60]. Four strips of tape are applied in a specific fashion to provide such support (picture 9). The tape should not be applied too tightly, and use of hypoallergenic tape is recommended to avoid allergic reactions [59].